diff --git a/backend/examples/serializers.py b/backend/examples/serializers.py
index acdbcfef..4ea517fe 100644
--- a/backend/examples/serializers.py
+++ b/backend/examples/serializers.py
@@ -17,9 +17,17 @@ class CommentSerializer(serializers.ModelSerializer):
         read_only_fields = ("user", "example")
 
 
+class AssignmentSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Assignment
+        fields = ("id", "assignee", "example", "created_at", "updated_at")
+        read_only_fields = ("id", "created_at", "updated_at")
+
+
 class ExampleSerializer(serializers.ModelSerializer):
     annotation_approver = serializers.SerializerMethodField()
     is_confirmed = serializers.SerializerMethodField()
+    assignments = serializers.SerializerMethodField()
 
     @classmethod
     def get_annotation_approver(cls, instance):
@@ -34,6 +42,16 @@ class ExampleSerializer(serializers.ModelSerializer):
             states = instance.states.filter(confirmed_by_id=user.id)
         return states.count() > 0
 
+    def get_assignments(self, instance):
+        return [
+            {
+                "id": assignment.id,
+                "assignee": assignment.assignee.username,
+                "assignee_id": assignment.assignee.id,
+            }
+            for assignment in instance.assignments.all()
+        ]
+
     class Meta:
         model = Example
         fields = [
@@ -46,15 +64,9 @@ class ExampleSerializer(serializers.ModelSerializer):
             "is_confirmed",
             "upload_name",
             "score",
+            "assignments",
         ]
-        read_only_fields = ["filename", "is_confirmed", "upload_name"]
-
-
-class AssignmentSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = Assignment
-        fields = ("id", "assignee", "example", "created_at", "updated_at")
-        read_only_fields = ("id", "created_at", "updated_at")
+        read_only_fields = ["filename", "is_confirmed", "upload_name", "assignments"]
 
 
 class ExampleStateSerializer(serializers.ModelSerializer):
diff --git a/frontend/components/example/AudioList.vue b/frontend/components/example/AudioList.vue
index 887916ab..988a2858 100644
--- a/frontend/components/example/AudioList.vue
+++ b/frontend/components/example/AudioList.vue
@@ -43,8 +43,23 @@
     <template #[`item.meta`]="{ item }">
       {{ JSON.stringify(item.meta, null, 4) }}
     </template>
-    <template #[`item.commentCount`]="{ item }">
-      <span> {{ item.commentCount }} </span>
+    <template #[`item.assignee`]="{ item }">
+      <v-combobox
+        :value="toSelected(item)"
+        :items="members"
+        item-text="username"
+        no-data-text="No one"
+        multiple
+        chips
+        dense
+        flat
+        hide-selected
+        hide-details
+        small-chips
+        solo
+        style="width: 200px"
+        @change="onAssignOrUnassign(item, $event)"
+      />
     </template>
     <template #[`item.action`]="{ item }">
       <v-btn small color="primary text-capitalize" @click="toLabeling(item)">
@@ -60,6 +75,7 @@ import type { PropType } from 'vue'
 import Vue from 'vue'
 import { DataOptions } from 'vuetify/types'
 import { ExampleDTO } from '~/services/application/example/exampleData'
+import { MemberItem } from '~/domain/models/member/member'
 
 export default Vue.extend({
   props: {
@@ -82,6 +98,15 @@ export default Vue.extend({
       type: Number,
       default: 0,
       required: true
+    },
+    members: {
+      type: Array as PropType<MemberItem[]>,
+      default: () => [],
+      required: true
+    },
+    isAdmin: {
+      type: Boolean,
+      default: false
     }
   },
 
@@ -95,12 +120,7 @@ export default Vue.extend({
 
   computed: {
     headers() {
-      return [
-        {
-          text: 'ID',
-          value: 'id',
-          sortable: false
-        },
+      const headers = [
         {
           text: 'Status',
           value: 'isConfirmed',
@@ -121,17 +141,20 @@ export default Vue.extend({
           value: 'meta',
           sortable: false
         },
-        {
-          text: this.$t('comments.comments'),
-          value: 'commentCount',
-          sortable: false
-        },
         {
           text: this.$t('dataset.action'),
           value: 'action',
           sortable: false
         }
       ]
+      if (this.isAdmin) {
+        headers.splice(4, 0, {
+          text: 'Assignee',
+          value: 'assignee',
+          sortable: false
+        })
+      }
+      return headers
     }
   },
 
@@ -166,6 +189,31 @@ export default Vue.extend({
       const offset = (this.options.page - 1) * this.options.itemsPerPage
       const page = (offset + index + 1).toString()
       this.$emit('click:labeling', { page, q: this.search })
+    },
+
+    toSelected(item: ExampleDTO) {
+      const assigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      return this.members.filter((member) => assigneeIds.includes(member.user))
+    },
+
+    onAssignOrUnassign(item: ExampleDTO, newAssignees: MemberItem[]) {
+      const newAssigneeIds = newAssignees.map((assignee) => assignee.user)
+      const oldAssigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      if (oldAssigneeIds.length > newAssigneeIds.length) {
+        // unassign
+        for (const assignment of item.assignments) {
+          if (!newAssigneeIds.includes(assignment.assignee_id)) {
+            this.$emit('unassign', assignment.id)
+          }
+        }
+      } else {
+        // assign
+        for (const newAssigneeId of newAssigneeIds) {
+          if (!oldAssigneeIds.includes(newAssigneeId)) {
+            this.$emit('assign', item.id, newAssigneeId)
+          }
+        }
+      }
     }
   }
 })
diff --git a/frontend/components/example/DocumentList.vue b/frontend/components/example/DocumentList.vue
index 1e61bcaa..61a667b3 100644
--- a/frontend/components/example/DocumentList.vue
+++ b/frontend/components/example/DocumentList.vue
@@ -41,8 +41,23 @@
     <template #[`item.meta`]="{ item }">
       {{ JSON.stringify(item.meta, null, 4) }}
     </template>
-    <template #[`item.commentCount`]="{ item }">
-      <span> {{ item.commentCount }} </span>
+    <template #[`item.assignee`]="{ item }">
+      <v-combobox
+        :value="toSelected(item)"
+        :items="members"
+        item-text="username"
+        no-data-text="No one"
+        multiple
+        chips
+        dense
+        flat
+        hide-selected
+        hide-details
+        small-chips
+        solo
+        style="width: 200px"
+        @change="onAssignOrUnassign(item, $event)"
+      />
     </template>
     <template #[`item.action`]="{ item }">
       <v-btn class="me-1" small color="primary text-capitalize" @click="$emit('edit', item)"
@@ -61,6 +76,7 @@ import type { PropType } from 'vue'
 import Vue from 'vue'
 import { DataOptions } from 'vuetify/types'
 import { ExampleDTO } from '~/services/application/example/exampleData'
+import { MemberItem } from '~/domain/models/member/member'
 
 export default Vue.extend({
   props: {
@@ -83,6 +99,15 @@ export default Vue.extend({
       type: Number,
       default: 0,
       required: true
+    },
+    members: {
+      type: Array as PropType<MemberItem[]>,
+      default: () => [],
+      required: true
+    },
+    isAdmin: {
+      type: Boolean,
+      default: false
     }
   },
 
@@ -96,12 +121,7 @@ export default Vue.extend({
 
   computed: {
     headers() {
-      return [
-        {
-          text: 'ID',
-          value: 'id',
-          sortable: false
-        },
+      const headers = [
         {
           text: 'Status',
           value: 'isConfirmed',
@@ -117,17 +137,20 @@ export default Vue.extend({
           value: 'meta',
           sortable: false
         },
-        {
-          text: this.$t('comments.comments'),
-          value: 'commentCount',
-          sortable: false
-        },
         {
           text: this.$t('dataset.action'),
           value: 'action',
           sortable: false
         }
       ]
+      if (this.isAdmin) {
+        headers.splice(3, 0, {
+          text: 'Assignee',
+          value: 'assignee',
+          sortable: false
+        })
+      }
+      return headers
     }
   },
 
@@ -162,6 +185,31 @@ export default Vue.extend({
       const offset = (this.options.page - 1) * this.options.itemsPerPage
       const page = (offset + index + 1).toString()
       this.$emit('click:labeling', { page, q: this.search })
+    },
+
+    toSelected(item: ExampleDTO) {
+      const assigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      return this.members.filter((member) => assigneeIds.includes(member.user))
+    },
+
+    onAssignOrUnassign(item: ExampleDTO, newAssignees: MemberItem[]) {
+      const newAssigneeIds = newAssignees.map((assignee) => assignee.user)
+      const oldAssigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      if (oldAssigneeIds.length > newAssigneeIds.length) {
+        // unassign
+        for (const assignment of item.assignments) {
+          if (!newAssigneeIds.includes(assignment.assignee_id)) {
+            this.$emit('unassign', assignment.id)
+          }
+        }
+      } else {
+        // assign
+        for (const newAssigneeId of newAssigneeIds) {
+          if (!oldAssigneeIds.includes(newAssigneeId)) {
+            this.$emit('assign', item.id, newAssigneeId)
+          }
+        }
+      }
     }
   }
 })
diff --git a/frontend/components/example/ImageList.vue b/frontend/components/example/ImageList.vue
index c3809a54..c3f2c462 100644
--- a/frontend/components/example/ImageList.vue
+++ b/frontend/components/example/ImageList.vue
@@ -47,8 +47,23 @@
     <template #[`item.meta`]="{ item }">
       {{ JSON.stringify(item.meta, null, 4) }}
     </template>
-    <template #[`item.commentCount`]="{ item }">
-      <span> {{ item.commentCount }} </span>
+    <template #[`item.assignee`]="{ item }">
+      <v-combobox
+        :value="toSelected(item)"
+        :items="members"
+        item-text="username"
+        no-data-text="No one"
+        multiple
+        chips
+        dense
+        flat
+        hide-selected
+        hide-details
+        small-chips
+        solo
+        style="width: 200px"
+        @change="onAssignOrUnassign(item, $event)"
+      />
     </template>
     <template #[`item.action`]="{ item }">
       <v-btn small color="primary text-capitalize" @click="toLabeling(item)">
@@ -64,6 +79,7 @@ import type { PropType } from 'vue'
 import Vue from 'vue'
 import { DataOptions } from 'vuetify/types'
 import { ExampleDTO } from '~/services/application/example/exampleData'
+import { MemberItem } from '~/domain/models/member/member'
 
 export default Vue.extend({
   props: {
@@ -86,6 +102,15 @@ export default Vue.extend({
       type: Number,
       default: 0,
       required: true
+    },
+    members: {
+      type: Array as PropType<MemberItem[]>,
+      default: () => [],
+      required: true
+    },
+    isAdmin: {
+      type: Boolean,
+      default: false
     }
   },
 
@@ -99,12 +124,7 @@ export default Vue.extend({
 
   computed: {
     headers() {
-      return [
-        {
-          text: 'ID',
-          value: 'id',
-          sortable: false
-        },
+      const headers = [
         {
           text: 'Status',
           value: 'isConfirmed',
@@ -125,17 +145,20 @@ export default Vue.extend({
           value: 'meta',
           sortable: false
         },
-        {
-          text: this.$t('comments.comments'),
-          value: 'commentCount',
-          sortable: false
-        },
         {
           text: this.$t('dataset.action'),
           value: 'action',
           sortable: false
         }
       ]
+      if (this.isAdmin) {
+        headers.splice(4, 0, {
+          text: 'Assignee',
+          value: 'assignee',
+          sortable: false
+        })
+      }
+      return headers
     }
   },
 
@@ -170,6 +193,31 @@ export default Vue.extend({
       const offset = (this.options.page - 1) * this.options.itemsPerPage
       const page = (offset + index + 1).toString()
       this.$emit('click:labeling', { page, q: this.search })
+    },
+
+    toSelected(item: ExampleDTO) {
+      const assigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      return this.members.filter((member) => assigneeIds.includes(member.user))
+    },
+
+    onAssignOrUnassign(item: ExampleDTO, newAssignees: MemberItem[]) {
+      const newAssigneeIds = newAssignees.map((assignee) => assignee.user)
+      const oldAssigneeIds = item.assignments.map((assignment) => assignment.assignee_id)
+      if (oldAssigneeIds.length > newAssigneeIds.length) {
+        // unassign
+        for (const assignment of item.assignments) {
+          if (!newAssigneeIds.includes(assignment.assignee_id)) {
+            this.$emit('unassign', assignment.id)
+          }
+        }
+      } else {
+        // assign
+        for (const newAssigneeId of newAssigneeIds) {
+          if (!oldAssigneeIds.includes(newAssigneeId)) {
+            this.$emit('assign', item.id, newAssigneeId)
+          }
+        }
+      }
     }
   }
 })
diff --git a/frontend/domain/models/example/example.ts b/frontend/domain/models/example/example.ts
index 23d4a168..fa95b0fb 100644
--- a/frontend/domain/models/example/example.ts
+++ b/frontend/domain/models/example/example.ts
@@ -1,3 +1,9 @@
+export interface Assignment {
+  id: string
+  assignee: string
+  assignee_id: number
+}
+
 export class ExampleItem {
   constructor(
     readonly id: number,
@@ -7,7 +13,8 @@ export class ExampleItem {
     readonly commentCount: number,
     readonly fileUrl: string,
     readonly isConfirmed: boolean,
-    readonly filename: string
+    readonly filename: string,
+    readonly assignments: Assignment[]
   ) {}
 
   get url() {
diff --git a/frontend/pages/projects/_id/dataset/index.vue b/frontend/pages/projects/_id/dataset/index.vue
index 8173487e..ee2ebc61 100644
--- a/frontend/pages/projects/_id/dataset/index.vue
+++ b/frontend/pages/projects/_id/dataset/index.vue
@@ -38,29 +38,41 @@
       v-if="project.isImageProject"
       v-model="selected"
       :items="item.items"
+      :is-admin="user.isProjectAdmin"
       :is-loading="isLoading"
+      :members="members"
       :total="item.count"
       @update:query="updateQuery"
       @click:labeling="movePage"
+      @assign="assign"
+      @unassign="unassign"
     />
     <audio-list
       v-else-if="project.isAudioProject"
       v-model="selected"
       :items="item.items"
+      :is-admin="user.isProjectAdmin"
       :is-loading="isLoading"
+      :members="members"
       :total="item.count"
       @update:query="updateQuery"
       @click:labeling="movePage"
+      @assign="assign"
+      @unassign="unassign"
     />
     <document-list
       v-else
       v-model="selected"
       :items="item.items"
+      :is-admin="user.isProjectAdmin"
       :is-loading="isLoading"
+      :members="members"
       :total="item.count"
       @update:query="updateQuery"
       @click:labeling="movePage"
       @edit="editItem"
+      @assign="assign"
+      @unassign="unassign"
     />
   </v-card>
 </template>
@@ -78,6 +90,7 @@ import AudioList from '~/components/example/AudioList.vue'
 import ImageList from '~/components/example/ImageList.vue'
 import { getLinkToAnnotationPage } from '~/presenter/linkToAnnotationPage'
 import { ExampleDTO, ExampleListDTO } from '~/services/application/example/exampleData'
+import { MemberItem } from '~/domain/models/member/member'
 
 export default Vue.extend({
   components: {
@@ -103,6 +116,8 @@ export default Vue.extend({
       dialogDeleteAll: false,
       item: {} as ExampleListDTO,
       selected: [] as ExampleDTO[],
+      members: [] as MemberItem[],
+      user: {} as MemberItem,
       isLoading: false,
       isProjectAdmin: false
     }
@@ -111,6 +126,10 @@ export default Vue.extend({
   async fetch() {
     this.isLoading = true
     this.item = await this.$services.example.list(this.projectId, this.$route.query)
+    this.user = await this.$repositories.member.fetchMyRole(this.projectId)
+    if (this.user.isProjectAdmin) {
+      this.members = await this.$repositories.member.list(this.projectId)
+    }
     this.isLoading = false
   },
 
@@ -175,6 +194,16 @@ export default Vue.extend({
 
     editItem(item: ExampleDTO) {
       this.$router.push(`dataset/${item.id}/edit`)
+    },
+
+    async assign(exampleId: number, userId: number) {
+      await this.$repositories.assignment.assign(this.projectId, exampleId, userId)
+      this.item = await this.$services.example.list(this.projectId, this.$route.query)
+    },
+
+    async unassign(assignmentId: string) {
+      await this.$repositories.assignment.unassign(this.projectId, assignmentId)
+      this.item = await this.$services.example.list(this.projectId, this.$route.query)
     }
   }
 })
diff --git a/frontend/plugins/repositories.ts b/frontend/plugins/repositories.ts
index 7fd45e4a..cc196735 100644
--- a/frontend/plugins/repositories.ts
+++ b/frontend/plugins/repositories.ts
@@ -1,4 +1,5 @@
 import { Plugin } from '@nuxt/types'
+import { APIAssignmentRepository } from '@/repositories/example/apiAssignmentRepository'
 import { APIAuthRepository } from '@/repositories/auth/apiAuthRepository'
 import { APIConfigRepository } from '@/repositories/autoLabeling/config/apiConfigRepository'
 import { APITemplateRepository } from '@/repositories/autoLabeling/template/apiTemplateRepository'
@@ -23,7 +24,6 @@ import { APICatalogRepository } from '@/repositories/upload/apiCatalogRepository
 import { APIParseRepository } from '@/repositories/upload/apiParseRepository'
 import { APIUserRepository } from '@/repositories/user/apiUserRepository'
 import { APISegmentationRepository } from '~/repositories/tasks/apiSegmentationRepository'
-
 export interface Repositories {
   // User
   auth: APIAuthRepository
@@ -41,6 +41,7 @@ export interface Repositories {
   taskStatus: APITaskStatusRepository
   metrics: APIMetricsRepository
   option: LocalStorageOptionRepository
+  assignment: APIAssignmentRepository
 
   // Auto Labeling
   config: APIConfigRepository
@@ -91,6 +92,7 @@ const repositories: Repositories = {
   taskStatus: new APITaskStatusRepository(),
   metrics: new APIMetricsRepository(),
   option: new LocalStorageOptionRepository(),
+  assignment: new APIAssignmentRepository(),
 
   // Auto Labeling
   config: new APIConfigRepository(),
diff --git a/frontend/repositories/example/apiAssignmentRepository.ts b/frontend/repositories/example/apiAssignmentRepository.ts
new file mode 100644
index 00000000..08bc9d82
--- /dev/null
+++ b/frontend/repositories/example/apiAssignmentRepository.ts
@@ -0,0 +1,18 @@
+import ApiService from '@/services/api.service'
+import { Assignment } from '@/domain/models/example/example'
+
+export class APIAssignmentRepository {
+  constructor(private readonly request = ApiService) {}
+
+  async assign(projectId: string, exampleId: number, userId: number): Promise<Assignment> {
+    const url = `/projects/${projectId}/assignments`
+    const payload = { example: exampleId, assignee: userId }
+    const response = await this.request.post(url, payload)
+    return response.data
+  }
+
+  async unassign(projectId: string, assignmentId: string): Promise<void> {
+    const url = `/projects/${projectId}/assignments/${assignmentId}`
+    await this.request.delete(url)
+  }
+}
diff --git a/frontend/repositories/example/apiDocumentRepository.ts b/frontend/repositories/example/apiDocumentRepository.ts
index 3ee62d2b..cede2b66 100644
--- a/frontend/repositories/example/apiDocumentRepository.ts
+++ b/frontend/repositories/example/apiDocumentRepository.ts
@@ -11,7 +11,8 @@ function toModel(item: { [key: string]: any }): ExampleItem {
     item.comment_count,
     item.filename,
     item.is_confirmed,
-    item.upload_name
+    item.upload_name,
+    item.assignments
   )
 }
 
diff --git a/frontend/services/application/example/exampleData.ts b/frontend/services/application/example/exampleData.ts
index c6aac2e5..c67b320d 100644
--- a/frontend/services/application/example/exampleData.ts
+++ b/frontend/services/application/example/exampleData.ts
@@ -1,4 +1,4 @@
-import { ExampleItem, ExampleItemList } from '~/domain/models/example/example'
+import { ExampleItem, ExampleItemList, Assignment } from '~/domain/models/example/example'
 
 export class ExampleDTO {
   id: number
@@ -11,6 +11,7 @@ export class ExampleDTO {
   filename: string
   url: string
   isConfirmed: boolean
+  assignments: Assignment[]
 
   constructor(item: ExampleItem) {
     this.id = item.id
@@ -23,6 +24,7 @@ export class ExampleDTO {
     this.filename = item.filename
     this.url = item.url
     this.isConfirmed = item.isConfirmed
+    this.assignments = item.assignments
   }
 }