diff --git a/backend/src/graphql/resolvers/posts.spec.ts b/backend/src/graphql/resolvers/posts.spec.ts
index fc3948d98..dead7a876 100644
--- a/backend/src/graphql/resolvers/posts.spec.ts
+++ b/backend/src/graphql/resolvers/posts.spec.ts
@@ -10,6 +10,7 @@ import CONFIG from '@config/index'
 import databaseContext from '@context/database'
 import Factory, { cleanDatabase } from '@db/factories'
 import Image from '@db/models/Image'
+import { createGroupMutation } from '@graphql/queries/createGroupMutation'
 import { createPostMutation } from '@graphql/queries/createPostMutation'
 import createServer, { getContext } from '@src/server'
 
@@ -1305,6 +1306,130 @@ describe('pin posts', () => {
         })
       })
 
+      describe('post in public group', () => {
+        beforeEach(async () => {
+          await mutate({
+            mutation: createGroupMutation(),
+            variables: {
+              name: 'Public Group',
+              id: 'public-group',
+              about: 'This is a public group',
+              groupType: 'public',
+              actionRadius: 'regional',
+              description:
+                'This is a public group to test if the posts of this group can be pinned.',
+              categoryIds,
+            },
+          })
+          await mutate({
+            mutation: createPostMutation(),
+            variables: {
+              id: 'public-group-post',
+              title: 'Public group post',
+              content: 'This is a post in a public group',
+              groupId: 'public-group',
+              categoryIds,
+            },
+          })
+          variables = { ...variables, id: 'public-group-post' }
+        })
+
+        it('can be pinned', async () => {
+          await expect(mutate({ mutation: pinPostMutation, variables })).resolves.toMatchObject({
+            data: {
+              pinPost: {
+                id: 'public-group-post',
+                author: {
+                  slug: 'testuser',
+                },
+                pinnedBy: {
+                  id: 'current-user',
+                  name: 'Admin',
+                  role: 'admin',
+                },
+              },
+            },
+            errors: undefined,
+          })
+        })
+      })
+
+      describe('post in closed group', () => {
+        beforeEach(async () => {
+          await mutate({
+            mutation: createGroupMutation(),
+            variables: {
+              name: 'Closed Group',
+              id: 'closed-group',
+              about: 'This is a closed group',
+              groupType: 'closed',
+              actionRadius: 'regional',
+              description:
+                'This is a closed group to test if the posts of this group can be pinned.',
+              categoryIds,
+            },
+          })
+          await mutate({
+            mutation: createPostMutation(),
+            variables: {
+              id: 'closed-group-post',
+              title: 'Closed group post',
+              content: 'This is a post in a closed group',
+              groupId: 'closed-group',
+              categoryIds,
+            },
+          })
+          variables = { ...variables, id: 'closed-group-post' }
+        })
+
+        it('can not be pinned', async () => {
+          await expect(mutate({ mutation: pinPostMutation, variables })).resolves.toMatchObject({
+            data: {
+              pinPost: null,
+            },
+            errors: undefined,
+          })
+        })
+      })
+
+      describe('post in hidden group', () => {
+        beforeEach(async () => {
+          await mutate({
+            mutation: createGroupMutation(),
+            variables: {
+              name: 'Hidden Group',
+              id: 'hidden-group',
+              about: 'This is a hidden group',
+              groupType: 'hidden',
+              actionRadius: 'regional',
+              description:
+                'This is a hidden group to test if the posts of this group can be pinned.',
+              categoryIds,
+            },
+          })
+          await mutate({
+            mutation: createPostMutation(),
+            variables: {
+              id: 'hidden-group-post',
+              title: 'Hidden group post',
+              content: 'This is a post in a hidden group',
+              groupId: 'hidden-group',
+              categoryIds,
+            },
+          })
+          variables = { ...variables, id: 'hidden-group-post' }
+        })
+
+        it('can not be pinned', async () => {
+          await expect(mutate({ mutation: pinPostMutation, variables })).resolves.toMatchObject({
+            data: {
+              pinPost: null,
+            },
+            errors: undefined,
+          })
+        })
+      })
+
       describe('PostOrdering', () => {
         beforeEach(async () => {
           await Factory.build('post', {
diff --git a/backend/src/graphql/resolvers/posts.ts b/backend/src/graphql/resolvers/posts.ts
index 1d23770a3..5190cabf8 100644
--- a/backend/src/graphql/resolvers/posts.ts
+++ b/backend/src/graphql/resolvers/posts.ts
@@ -351,7 +351,8 @@ export default {
       const pinPostCypher = `
         MATCH (user:User {id: $userId}) WHERE user.role = 'admin'
         MATCH (post:Post {id: $params.id})
-        WHERE NOT((post)-[:IN]->(:Group))
+        WHERE NOT EXISTS((post)-[:IN]->(:Group)) OR 
+          (post)-[:IN]->(:Group { groupType: 'public'})
         MERGE (user)-[pinned:PINNED {createdAt: toString(datetime())}]->(post)
         SET post.pinned = true
         RETURN post, pinned.createdAt as pinnedAt`
diff --git a/webapp/components/ContentMenu/ContentMenu.spec.js b/webapp/components/ContentMenu/ContentMenu.spec.js
index 2bce1496f..71e74ac74 100644
--- a/webapp/components/ContentMenu/ContentMenu.spec.js
+++ b/webapp/components/ContentMenu/ContentMenu.spec.js
@@ -197,6 +197,79 @@ describe('ContentMenu.vue', () => {
             ],
           ])
         })
+
+        describe('post in public group', () => {
+          it('can pin unpinned post', async () => {
+            getters['auth/isAdmin'] = () => true
+            const wrapper = await openContentMenu({
+              isOwner: false,
+              resourceType: 'contribution',
+              resource: {
+                id: 'd23a4265-f5f7-4e17-9f86-85f714b4b9f8',
+                pinnedBy: null,
+                group: {
+                  groupType: 'public',
+                },
+              },
+            })
+            wrapper
+              .findAll('.ds-menu-item')
+              .filter((item) => item.text() === 'post.menu.pin')
+              .at(0)
+              .trigger('click')
+            expect(wrapper.emitted('pinPost')).toEqual([
+              [
+                {
+                  id: 'd23a4265-f5f7-4e17-9f86-85f714b4b9f8',
+                  pinnedBy: null,
+                  group: {
+                    groupType: 'public',
+                  },
+                },
+              ],
+            ])
+          })
+        })
+
+        describe('post in closed group', () => {
+          it('can not be pinned', async () => {
+            getters['auth/isAdmin'] = () => true
+            const wrapper = await openContentMenu({
+              isOwner: false,
+              resourceType: 'contribution',
+              resource: {
+                id: 'd23a4265-f5f7-4e17-9f86-85f714b4b9f8',
+                pinnedBy: null,
+                group: {
+                  groupType: 'closed',
+                },
+              },
+            })
+            expect(
+              wrapper.findAll('.ds-menu-item').filter((item) => item.text() === 'post.menu.pin'),
+            ).toHaveLength(0)
+          })
+        })
+
+        describe('post in hidden group', () => {
+          it('can not be pinned', async () => {
+            getters['auth/isAdmin'] = () => true
+            const wrapper = await openContentMenu({
+              isOwner: false,
+              resourceType: 'contribution',
+              resource: {
+                id: 'd23a4265-f5f7-4e17-9f86-85f714b4b9f8',
+                pinnedBy: null,
+                group: {
+                  groupType: 'hidden',
+                },
+              },
+            })
+            expect(
+              wrapper.findAll('.ds-menu-item').filter((item) => item.text() === 'post.menu.pin'),
+            ).toHaveLength(0)
+          })
+        })
       })
 
       describe('when maxPinnedPosts = 3', () => {
diff --git a/webapp/components/ContentMenu/ContentMenu.vue b/webapp/components/ContentMenu/ContentMenu.vue
index 3f6f742a1..9c2bdc369 100644
--- a/webapp/components/ContentMenu/ContentMenu.vue
+++ b/webapp/components/ContentMenu/ContentMenu.vue
@@ -82,7 +82,7 @@ export default {
           })
         }
 
-        if (this.isAdmin && !this.resource.group) {
+        if (this.isAdmin && (!this.resource.group || this.resource.group.groupType === 'public')) {
           if (!this.resource.pinnedBy && this.canBePinned) {
             routes.push({
               label: this.$t(`post.menu.pin`),
diff --git a/webapp/graphql/PostQuery.js b/webapp/graphql/PostQuery.js
index d9d38eef4..a3dd67193 100644
--- a/webapp/graphql/PostQuery.js
+++ b/webapp/graphql/PostQuery.js
@@ -53,6 +53,7 @@ export default (i18n) => {
           id
           name
           slug
+          groupType
         }
       }
     }
@@ -95,6 +96,7 @@ export const filterPosts = (i18n) => {
           id
           name
           slug
+          groupType
         }
       }
     }
@@ -136,6 +138,7 @@ export const profilePagePosts = (i18n) => {
           id
           name
           slug
+          groupType
         }
       }
     }