Home > Security Control > Delete a SharePoint Online Security Group
Export to PDFTo delete a SharePoint Online security group, select a site collection/site, and navigate to Security > Users and Permissions > People and Groups, and then complete the following steps:
Click Groups to display all of the groups.
Click Edit beside the security group that you want to delete. On the Change settings for: page, you will see the security group name.
Click Delete in the bottom-right corner of the page to delete the security group.