Matthew Leighton or Matt Leighton is a Brazilian jiu-jitsu black belt under Mark Vives (New Breed Training Centre) and a representative of Jared Weiner's TAC team when competing internationally. Leighton made his name as one of grappling's rising stars while climbing the ranks of jiu-jitsu, by conquering important titles such as the IBJJF World No-Gi Champion (2016) and IBJJF European Open Champion (2016), a status he later cemented as a black belt with repeated podium placements in jiu-jitsu's international circuit.