Jason Knight (born July 14, 1992) is a former American bare knuckle boxer and a professional mixed martial artist.

Knight made his promotional debut against Tatsuya Kawajiri on December 11, 2015, at The Ultimate Fighter 22 Finale, replacing Mirsad Bektić on two weeks' notice.

[22][23] Following the stint in bare-knuckle boxing, Knight was expected to make his return to mixed martial arts against Christopher Ramírez at iKon Fighting Federation 5 on March 5, 2021.

[27] On May 29, 2021, it was announced that Knight is scheduled to headline the inaugural event of Jorge Masvidal's Gamebred Fighting Championship against Charles Bennett on June 18, 2021.

[29] Following the successful bout in Gamebred FC, Knight signed with the Professional Fighters League and faced Bobby Moffett at PFL 9 on August 27, 2021.

[35] In the quarterfinal Knight faced Titan FC Lightweight Champion Landon Quinones, and won the fight via a triangle choke submission in the first round.

[36] In the semi-final, Knight faced fellow teammate Kurt Holobaugh, and lost the fight via TKO in the second round.

[39] Followed by his loss to Joshua Weems at Gamebred Bareknuckle MMA 8 on November 15, 2024, he announced his retirement from combat sports on social media.

[45] However on July 15, 2019, Knight revealed on his social media that he was forced to withdraw from the bout due to a rib injury.

[46] Knight defeated Artem Lobov in a rematch headlining Bare Knuckle FC 9 on November 16, 2019, earning the victory by TKO in the fifth round.