Who many times has Manchester united won the uefa cup?

United have won the UEFA Cup three times: 1967/68, 1990/91 and 2007/08.

United won the European Cup in 68 (now known as the Champions League) and in 1991 United won the European Cup Winners Cup (this competition no longer exists). In 2008 Manchester United won the Uefa CHAMPIONS LEAGUE, not the Uefa cup. The Uefa Cup is a different competition.

The actual answer is never.