diff --git a/changelogs/fragments/6776.yml b/changelogs/fragments/6776.yml
new file mode 100644
index 00000000000..eb976800efa
--- /dev/null
+++ b/changelogs/fragments/6776.yml
@@ -0,0 +1,2 @@
+fix:
+- Fix workspace name duplication check ([#6776](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6776))
\ No newline at end of file
diff --git a/src/plugins/workspace/server/integration_tests/routes.test.ts b/src/plugins/workspace/server/integration_tests/routes.test.ts
index cc1ef5f756b..1e0530217f2 100644
--- a/src/plugins/workspace/server/integration_tests/routes.test.ts
+++ b/src/plugins/workspace/server/integration_tests/routes.test.ts
@@ -83,6 +83,43 @@ describe('workspace service api integration test', () => {
       expect(result.body.success).toEqual(true);
       expect(typeof result.body.result.id).toBe('string');
     });
+
+    it('create workspace failed when name duplicate', async () => {
+      let result: any = await osdTestServer.request
+        .post(root, `/api/workspaces`)
+        .send({
+          attributes: omitId(testWorkspace),
+        })
+        .expect(200);
+
+      expect(result.body.success).toEqual(true);
+
+      await opensearchServer.opensearch.getClient().indices.refresh({ index: '.kibana' });
+
+      // same name
+      result = await osdTestServer.request
+        .post(root, `/api/workspaces`)
+        .send({
+          attributes: omitId(testWorkspace),
+        })
+        .expect(200);
+
+      expect(result.body.success).toEqual(false);
+      expect(result.body.error).toEqual(
+        'workspace name has already been used, try with a different name'
+      );
+
+      // to verify workspace name is not interpreted as we have enclosed the name with double quotes
+      result = await osdTestServer.request
+        .post(root, `/api/workspaces`)
+        .send({
+          attributes: { ...omitId(testWorkspace), name: 'test test_workspace' },
+        })
+        .expect(200);
+
+      expect(result.body.success).toEqual(true);
+    });
+
     it('get', async () => {
       const result = await osdTestServer.request
         .post(root, `/api/workspaces`)
@@ -123,6 +160,56 @@ describe('workspace service api integration test', () => {
       expect(getResult.body.success).toEqual(true);
       expect(getResult.body.result.name).toEqual('updated');
     });
+
+    it('update workspace failed when new name is duplicate', async () => {
+      const result: any = await osdTestServer.request
+        .post(root, `/api/workspaces`)
+        .send({
+          attributes: { ...omitId(testWorkspace), name: 'foo' },
+        })
+        .expect(200);
+
+      await osdTestServer.request
+        .post(root, `/api/workspaces`)
+        .send({
+          attributes: { ...omitId(testWorkspace), name: 'bar baz' },
+        })
+        .expect(200);
+
+      const updateResult = await osdTestServer.request
+        .put(root, `/api/workspaces/${result.body.result.id}`)
+        .send({
+          attributes: {
+            ...omitId(testWorkspace),
+            name: 'bar baz',
+          },
+        })
+        .expect(200);
+
+      expect(updateResult.body.success).toEqual(false);
+      expect(updateResult.body.error).toEqual(
+        'workspace name has already been used, try with a different name'
+      );
+
+      await osdTestServer.request
+        .put(root, `/api/workspaces/${result.body.result.id}`)
+        .send({
+          attributes: {
+            ...omitId(testWorkspace),
+            name: 'bar',
+          },
+        })
+        .expect(200);
+
+      const getResult = await osdTestServer.request.get(
+        root,
+        `/api/workspaces/${result.body.result.id}`
+      );
+
+      expect(getResult.body.success).toEqual(true);
+      expect(getResult.body.result.name).toEqual('bar');
+    });
+
     it('delete', async () => {
       const result: any = await osdTestServer.request
         .post(root, `/api/workspaces`)
diff --git a/src/plugins/workspace/server/workspace_client.ts b/src/plugins/workspace/server/workspace_client.ts
index 72609519d2f..a906e3548ca 100644
--- a/src/plugins/workspace/server/workspace_client.ts
+++ b/src/plugins/workspace/server/workspace_client.ts
@@ -95,7 +95,7 @@ export class WorkspaceClient implements IWorkspaceClientImpl {
       const existingWorkspaceRes = await this.getScopedClientWithoutPermission(requestDetail)?.find(
         {
           type: WORKSPACE_TYPE,
-          search: attributes.name,
+          search: `"${attributes.name}"`,
           searchFields: ['name'],
         }
       );
@@ -184,7 +184,7 @@ export class WorkspaceClient implements IWorkspaceClientImpl {
           requestDetail
         )?.find({
           type: WORKSPACE_TYPE,
-          search: attributes.name,
+          search: `"${attributes.name}"`,
           searchFields: ['name'],
           fields: ['_id'],
         });