How times has the undertaker won the world heavy weight champion belt?

The Undertaker has won the World Heavyweight Champion 3 times. The latest win was over C. M. Punk at W. W. E. Hell in a Cell 2009 and it was a Hell in a Cell match. The Undertaker had that title all the way till W. W. E. Elimination Chamber 2010 when he lost it to Chris Jericho after an interference by Shawn Michaels.