Gary Rohan (born 7 June 1991) is a former Australian rules footballer who played for the Sydney Swans and Geelong Cats in the Australian Football League (AFL).

Rohan participated in the Auskick program at Cobden. At 14 he could not get a game in the Cobden under-aged side so he gave up football in preference to mixed netball. The desire to play football again he tried out with the Geelong Falcons, struggling at first but his top-aged year saw great improvement. Rohan represented Victoria Country at the 2009 AFL National Under 18 Championships, winning the team's MVP award as well as All-Australian honours.

Geelong Falcons regional manager Michael Turner described Rohan as "the most exciting player I've ever seen".

Sydney coach Paul Roos admitted, "We were looking for players with pace, and Gary is very, very quick!" His friend Ben Cunnington was drafted by North Melbourne with the previous pick.

Rohan was drafted to Sydney with the sixth selection (just the Swans' second top-10 draft pick since the late 1990s) in the 2009 AFL draft from the Geelong Falcons. Rohan made his AFL debut in round 7 of the 2010 season, against reigning premiers, Geelong, at Kardinia Park, where he had played much of his junior football with the Falcons. Rohan finished his debut season having played nine senior games for the Swans and kicking seven goals.

Much of Rohan's 2011 season was written off due to a serious hamstring injury but, when he returned to the senior side late in the year, he managed to have a profound impact on the side's performance. He was played as a near-permanent forward and performed well as he kicked goals and chased and tackled hard.

In Round 4 of the 2012 AFL season, Rohan suffered a horrific leg injury in the opening minutes of Sydney's 36-point win over North Melbourne. This injury ruled him out for the 2012 season.

Rohan played for the Swans in the 2014 AFL Grand Final and 2016 AFL Grand Final.