1. Back up your organization content
Before you delete your organization, make sure you have a copy of all repositories, wikis, issues, and project boards from the account.
Note: If necessary, a site administrator for your GitHub Enterprise Server instance may be able to partially restore a deleted organization. For more information, see "Restoring a deleted organization."
2. Delete the organization
- In the top right corner of GitHub Enterprise Server, click your profile photo, then click Your organizations.
- Next to the organization, click Settings.
- Near the bottom of the organization's settings page, click Delete this Organization.