SharePoint Online: Get the Site Owner using PowerShell

Hello michael1900,

One of the options to get Site Admins is to get list of all members of the site and then identify who has IsSiteAdmin property equal to True:

$SiteAdmins = (Get-SPOUser -Site $URL -Limit ALL | Where-Object { $_.IsSiteAdmin -eq $True} 

Here is your code with the added line:

$AdminCenterURL = "https://<TenantName>-admin.sharepoint.com/"
$CSVPath = "c:/temp/danny.csv"
Connect-SPOService -url $AdminCenterURL
Connect-AzureAD
$Sites = Get-SPOSite -Limit ALL
$Results = New-Object 'System.Collections.Generic.List[psobject]'

forEach($s in $Sites) {
    If($_.Template -like 'GROUP*')
    {
        $GroupOwners = (Get-AzureADGroupOwner -ObjectId $s.GroupID | Select -ExpandProperty UserPrincipalName) -join "; "     

    }
    Else{
        $GroupOwners = $s.Owner
    }
    $SiteAdmins = (Get-SPOUser -Site $s.URL -Limit ALL | Where-Object { $_.IsSiteAdmin -eq $True} | Select-Object -ExpandProperty DisplayName) -join "; "
    $Results.Add( $(New-Object PSObject -Property $([ordered]@{
    'Site Title' = $s.Title
    'URL' = $s.Url
    'Owner(s)' = $GroupOwners
    'Admin(s)' = $SiteAdmins
    })))
}
$Results| Export-CSV -path $CSVPath -NoTypeInformation -Encoding utf8

Hope that helps.