Peter Albert Charles Senior OAM (born 31 July 1959) is an Australian professional golfer who has won more than twenty tournaments around the world.

Senior has won professional events on the main men's tour in five separate decades, a feat achieved by very few players previously anywhere in the world.

[2][3] Between 1984 and 1992, Senior competed on the European Tour full-time, winning four tournaments and finishing a career best of 7th on the Order of Merit in 1987.

Senior made his debut on the over-50 circuit the Champions Tour in February 2010 at The ACE Group Classic.

Senior announced his retirement during the second round of the 2016 Australian Open held at The Royal Sydney Golf Club.

Senior suffered a hip injury on the sixth hole and announced his retirement from professional golf shortly after.