Find All Office 365 Group Owners using PowerShell

Requirement: Get Office 365 Group Owners

How to Get Office 365 Group Owners?
To get Office 365 group owners from Microsoft 365 admin center,

• Login to the Microsoft 365 Admin Center site: https://admin.microsoft.com
• Expand Groups and Click on Groups link in the left navigation. 
• The groups page lists all groups in your Office 365 tenant. Pick the desired group to list owners of the group.
• This opens the group's details page which lists group Owners
  

Get Office 365 Group Owners using PowerShell:
The script connects to Exchange Online and gets group owners of a given Office 365 group "[email protected]".

#Get Credentials to connect
$Credential = Get-Credential
  
#Create the session
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ `
           -Credential $Credential -Authentication Basic -AllowRedirection
  
#Import the session
Import-PSSession $Session -DisableNameChecking | Out-Null

#Get Owners of a Office 365 Group
Get-UnifiedGroup -Identity "[email protected]" | Get-UnifiedGroupLinks -LinkType Owner | Select DisplayName, PrimarySmtpAddress

#Remove the session
Remove-PSSession $Session

Find All Office 365 Group Owners using PowerShell:
To get owners of all Office 365 groups and export to CSV, use:

#Get Credentials to connect
$Credential = Get-Credential
  
#Create the session
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ `
           -Credential $Credential -Authentication Basic -AllowRedirection
  
#Import the session
Import-PSSession $Session -DisableNameChecking | Out-Null 

#Get All Office 365 Groups
$GroupData = @()
$Groups = Get-UnifiedGroup -ResultSize Unlimited -SortBy Name

#Loop through each Group
$Groups | Foreach-Object {
    #Get Group Owners
    $GroupOwners = Get-UnifiedGroupLinks -LinkType Owners -Identity $_.Id | Select DisplayName, PrimarySmtpAddress
    $GroupData += New-Object -TypeName PSObject -Property @{
            GroupName = $_.Alias
            GroupEmail = $_.PrimarySmtpAddress 
            OwnerName = $GroupOwners.DisplayName -join "; "
            OwnerIDs = $GroupOwners.PrimarySmtpAddress -join "; "
    }
}
#Get Groups Data
$GroupData
$GroupData | Export-Csv "C:\Temp\GroupOwners.csv" -NoTypeInformation

#Remove the session
Remove-PSSession $Session

Find Owners of an Office 365 Group using Azure AD PowerShell:
Make sure you have "Azure AD" PowerShell Module installed before running this script!

#Connect to AzureAD
Connect-AzureAD -Credential (Get-Credential) | Out-Null

#Get Group Owners
Get-AzureADGroupOwner -ObjectId (Get-AzureADGroup -SearchString "Purchase").ObjectId

PowerShell to Generate Group Owners Report from Azure AD

#Get Credentials to connect
$Cred = Get-Credential
 
#Connect to AzureAD
Connect-AzureAD -Credential $Cred | Out-Null
$GroupData = @()

#Get all Office 365 Groups
Get-AzureADMSGroup -Filter "groupTypes/any(c:c eq 'Unified')" -All:$true | ForEach-object {
    $GroupName = $_.DisplayName
    
    #Get Owners
    $GroupOwners = Get-AzureADGroupOwner -ObjectId $_.ID | Select UserPrincipalName, DisplayName 

        $GroupData += New-Object PSObject -Property ([Ordered]@{ 
        GroupName = $GroupName
        OwnerID = $GroupOwners.UserPrincipalName -join "; "
        OwnerName = $GroupOwners.DisplayName -join "; "
    })
}

#Export Group Owners data to CSV
$GroupData
$GroupData | Export-Csv "C:\Temp\GroupOwners.csv" -NoTypeInformation

Script Output: