Trevor Gleeson (born 28 May 1968) is an Australian professional basketball coach who is the head coach of the Perth Wildcats of the National Basketball League (NBL).
After starting his coaching career in his hometown of Warrnambool, Gleeson had his first stint in the NBL between 1997 and 2000 as an assistant coach with the Brisbane Bullets.
Between 2000 and 2004, Gleeson coached in the Continental Basketball Association in the United States.
After two years in South Korea, he returned to Australia in 2006 to coach the Townsville Crocodiles.
Five seasons in North Queensland brought significant success, guiding the team to five consecutive post-season appearances and winning the NBL Coach of the Year Award in 2011.
He then spent a season with the Melbourne Tigers and then worked with AFL clubs North Melbourne and Hawthorn before the opportunity to join the Perth Wildcats arose in 2013.
Additionally, between 2014 and 2016, he served as an assistant coach for the Australian Boomers.
Since joining the Wildcats, Gleeson has become the club's most successful coach, making the finals in every season and claiming four championships in 2014, 2016, 2017 and 2019.
He is the only Wildcats coach to win multiple championships at the club, and in December 2019, he became the eighth coach in NBL history to reach 400 games.