Submission grappling (also known as submission fighting, submission wrestling and "No-Gi Jiu Jitsu") is a formula of competition and a general term describing the aspect of martial arts and combat sports that focus on clinch and ground fighting with the aim of obtaining a submission using submission holds.

The sport of submission wrestling brings together techniques from Brazilian Jiu-Jitsu, Folk American Wrestling (Catch-as-catch-can), Luta Livre Esportiva, Freestyle Wrestling, Judo and Sambo. Submission fighting as an element of a larger sport setting is very common in mixed martial arts, Pankration, catch wrestling, shootfighting, shooto and others. Submission Wrestler's or Grapplers usually wears shorts, skin-sticky clothing, speedos and mixed short clothes so they do not rip off in combat.