To delete a Facebook comment, locate the post with the comment. On desktop, hover over your comment, click the three dots (⋯), then choose “Delete” and confirm. On the mobile app, tap and hold the comment or tap the three dots beside it, select “Delete,” and confirm. You can delete your own comments or others’ comments on your posts. Once deleted, the comment is permanently removed and cannot be recovered. Always double-check before deleting to avoid losing important content.