Glenn O'Shea is an Australian track cyclist who won the Omnium at the 2012 UCI Track Cycling World Championships. He was also a member of the Australian team that won silver in the team pursuit at the 2012 World Championships and the 2012 Olympics.

The 2012 UCI Track Cycling World Championships was the World Championships for track cycling in 2012. They took place in Melbourne, Australia from 4 to 8 April 2012. The championships took place in the Hisense Arena which previously hosted the world championships in 2004 and from 2008 to 2010 a round of the World Cup as well as the track cycling at the 2006 Commonwealth Games.