Ashley Williams is a Welsh-born grappler, and a black belt in Brazilian jiu-jitsu under Chris Rees, being one of the most well known European athletes of his generation. Williams is mostly recognized for his accolades in jiu-jitsu's no-gi circuit, particularly his wins at the International Brazilian Jiu-Jitsu Federation (IBJJF) European No-Gi Open, and his performances in submission-only events such as Eddie Bravo Invitational (EBI), Polaris, GrappleFest and Kasai Pro.