Marc Diakiese (born 16 March 1993) is an English mixed martial artist of Congolese descent currently competing in the Lightweight division of the Ultimate Fighting Championship.
After earning four wins in his professional MMA career in regional promotions, Diakiese joined the BAMMA organization in 2014. He fought five times for the promotion over the course of the next year, bringing his record to 9-0 and in the process winning the BAMMA Lonsdale British Lightweight Championship, which he successfully defended twice before signing with the UFC.