How to delete or close your Tumblr account?
There are 2 ways to delete your Tumblr account, depending on whether or not it is linked to your Yahoo account. To find out which way you are, sign in to your Tumblr account, go to the settings page and search for the "Delete Account" button.
If you see the "Delete Account" button, follow the instructions to cancel or delete or deactivate your account.
Before you do anything, keep in mind that deletion cannot be undone. Never ever. Once you've deleted your blog or account, its content has disappeared forever.
To delete all of your accounts, go to your primary blog settings page or account settings page and click the "delete account" button at the bottom of the page. Be aware:
Here is how to delete a secondary or group blog: -
If you are the only member of the blog, choosing "Remove blog" will remove it from Tumblr and publish your URL for anyone to use. If there is at least one remaining member of the blog, you cannot delete it, but choosing "Leave Blog" will remove it from it. If you were the sole administrator of the blog, another member will be automatically promoted to Administrator.
If you don't see the "Delete Account" button, your Tumblr account is linked to your Yahoo ID. You must close your Yahoo account to delete your Tumblr account.