Application.CurrentUser (Access)
You can use the CurrentUser method to return the name of the current user of the database.
For example, use the CurrentUser method in a procedure that keeps track of the users who modify the database. The CurrentUser method returns a string that contains the name of the current user account. If you haven't established a security-enabled workgroup, the CurrentUser method returns the name of the default user account, Admin. The Admin user account gives the user full permissions to all database objects. If you have enabled workgroup security, the CurrentUser method returns the name of the current user account. For user accounts other than Admin, you can specify permissions that restrict the users' access to database objects.
MsgBox "The current user is: " & CurrentUser