Import Users from Excel (CSV) to SharePoint using PowerShell

Requirement: Import list of users from Excel .CSV file to SharePoint and add them into appropriate groups.

Solution: Lets import users from Excel to SharePoint using PowerShell. Here is my CSV file with list of users and their target groups in SharePoint:

PowerShell script to Import users from CSV to SharePoint 2013:

Add-PSSnapin Microsoft.SharePoint.PowerShell –erroraction SilentlyContinue

#Variables
$UserListCSV = "C:\UsersToImport.csv"
$SiteURL ="http://Sales.Crescent.com"

# Import the CSV file
$UserList = Import-CSV $UserListCSV #-header("GroupName","UserAccount") - If CSV doesn't has headers

#Get the Web
$Web = Get-SPWeb $SiteURL

#Iterate through each user from CSV file
foreach ($user in $UserList)
{
    #Get the Group and User
    $Group = $web.SiteGroups[$User.GroupName]
    $User = $web.Site.RootWeb.EnsureUser($User.UserAccount)
    #Add user to Group
    $Group.AddUser($User) 

    Write-Host "$($User) Added Successfully!" -ForegroundColor Green
}

#Dispose web object
$Web.Dispose()