Garry Lee Tonon (born September 12, 1991) is an American submission grappler and mixed martial artist.

Tonon has credited wrestling & martial arts with helping him to cope with his ADHD, and partially attributes his particular style of grappling to the disorder.

Shortly after leaving that school, Tonon found an advertisement for Tom DeBlass' academy, Ocean County Brazilian Jiu-Jitsu, and decided to continue his training there.

[1] In 2008, after about a year of consistent jiu-jitsu training with DeBlass and Almeida, Tonon won his first title at the IBJJF World Championships in the Blue Belt Juvenile Division.

[13] One month later, Tonon went on to compete for the first time in the ADCC Submission Wrestling World Championship in Beijing, China, where he had matches with Kron Gracie, Marcus Almeida, Roberto "Cyborg" Abreu, and Satoru Kitaoka.

His most notable wins include matches against AJ Agazarm,[16] Joao Miyao,[17] Dillon Danis,[18] Ralek Gracie,[19] and Vinny Magalhaes.

[27] In March 2018, Tonon made his professional mixed martial arts debut against Richard Corminal at ONE Championship: Iron Will, in Bangkok, Thailand.

[30] In May, Tonon faced Yoshiki Nakahara at ONE Championship: Enter the Dragon[31] He won the fight via a heel hook submission in the first round.

[32] The bout was subsequently rescheduled for ONE Championship: Big Bang on December 4, 2020[33] and it was confirmed that he would have to compete without his coach, John Danaher, in his corner for the first time due to travel restrictions in place in Singapore.

[38] While attempting a heel hook, Tonon was caught by a hammer fist and lost by first-round knockout, handing him his first career MMA loss.