How do you delete your own board from Pinterest?

You can't delete other people's boards, but you can unfollow them. To unfollow someone:

1. Log into your Pinterest account.
2. Go to your main page by clicking on your user name in the upper right hand corner, and click on "Boards."
3. Click on "Followers" on the bar above your boards.
4. Find the individual's account you want to unfollow, and click on "Unfollow."
5. If you are only following a few of their boards (and not their entire account), you won't have the "Unfollow" option below their name. So you'll need to click "Follow", then "Unfollow."