You can delete comments and posts on Facebook using either the mobile app or the website on a computer. You can remove your own comments along with those made by others on your posts, but you cannot delete comments on posts made by others. Additionally, you can delete posts made by yourself or others on your timeline.
Steps
Delete comments (on the mobile app)

Open the Facebook app. You can delete any valid comments through the mobile app. Ensure you're logged into the account with permission to delete the comment. If you wish to delete a post instead of a comment, refer to the next section.

Open Activity Log.

The Activity Log tracks all the comments and posts you’ve made. You can quickly find a specific comment using the Activity Log. To access it:
- On Android – Tap the Menu button (☰) in the top-right corner, then scroll down to 'Activity Log.'
- On iOS – Tap the Menu button (☰) in the bottom-right corner, then go to 'Settings.' Choose 'Activity Log' from the new menu.

Find the comment you want to delete on your post.

The Activity Log will only show the comments you've made. If you want to delete a comment made by someone else on your post, open the post itself.
- You can delete comments you've made on others' posts, as well as comments others leave on your posts. You cannot delete comments made by others on posts that are not yours.
Tap 'Delete' to remove the comment.

Find the post you wish to delete. You can delete posts that you have created or content that others have posted on your wall. Posts outside your ownership cannot be deleted.

Use the Activity Log to locate posts quickly. The Activity Log records all your Facebook activities. If you want to delete content posted by someone else on your timeline, you will need to look through your timeline.
- On Android - Tap the Menu button (☰), then choose 'Activity Log.'
- On iOS - Tap the Menu button (☰), tap 'Settings,' and then select 'Activity Log.'

Tap the 'v' icon next to the post you want to delete. A menu will appear, allowing you to delete content that you have posted or content that others have posted on your wall.
Select 'Delete' from the menu. You will be prompted to confirm that you want to delete the post. If the delete option is not available, it means you don't have permission to remove this content. However, you can hide posts you can't delete.
- When a post is deleted, all likes and any content that others have shared also disappears.
Delete a comment (on desktop)

Log into your Facebook account. You can delete all your comments through the Facebook website. Make sure you are logged into the correct account with permission to delete those comments.
- If you'd like to delete a post instead of a comment, refer to the next section.

Find the comment you wish to delete. You can delete your comments, as well as any comments others have made on your posts. You cannot delete comments made on someone else's post.

Use Activity Log to locate your comments. You can easily find all your comments using the Activity Log.
- Click the ▼ button at the top of the page, then select "Activity Log." From there, you can browse to find the comment you want to delete.
- Alternatively, you can open the post that contains the comment you want to remove.

Click on the button next to the comment you want to delete. Click the "X" next to someone else's comment, or the pencil icon next to your own comment.

Select "Delete" from the menu that appears. This option is only available for your own comments.

Confirm that you want to delete the comment. Once you confirm, the comment will be removed and will no longer be visible to anyone.
Delete post (on desktop)

Log into your Facebook account. Ensure you are logged into the account that has permission to delete those comments.

Find the post you wish to delete. You can remove posts you've made or content others have left on your timeline. You cannot delete posts made by someone else on their wall.
- You can use the Activity Log to quickly find older posts. Click the ▼ button at the top right, then select "Activity Log," and scroll down to locate the post.

Click the "v" button next to the post you want to delete. A small menu with several options will appear.
- If you're in the Activity Log, click the pencil icon.

Select "Delete" from the menu. Once you confirm, the post will be completely removed from Facebook. Anyone who shared the post will no longer be able to view it. All comments and likes will also be deleted.
Advice
- If you accidentally hide someone's comment or change your mind, you can restore it by clicking "Unhide". This button will appear where the hidden comment used to be displayed.
Warning
- Even if you delete or hide a comment, someone may have already seen it. Be cautious when commenting on Facebook or any social media platform to avoid leaving unintended impressions online.
