If you need to find out who a site owner is in SharePoint Online you can do this leveraging the SharePoint Online Management Shell. You must first have the SharePoint Online Management Shell installed on your computer. You need to be a Global Administrator or have a role that allows you to have access to the Tenant Admin site to perform the below steps.
- Download the SharePoint Online Management Shell from https://www.microsoft.com/en-us/download/details.aspx?id=35588
- Install the SharePoint Management Shell by launching the MSI installation package
- Once installed open the SharePoint Online Management Shell
- Use Connect-SPOService to connect to your tenant admin site. Below is an example to find the site owner:
Connect-SPOService -Url https://contoso-admin.sharepoint.com -Credential email@example.com $site = Get-SPOSite -Identity https://contoso.sharepoint.com $site | select Url,Owner Url Owner --- ----- https://contoso.sharepoint.com/ firstname.lastname@example.org