Spike Carlyle (born May 6, 1993) is an American mixed martial artist who competes in the lightweight division of Rizin Fighting Federation. He previously competed in the Ultimate Fighting Championship (UFC) and Bellator.

Carlyle started doing karate when he was four years old, and later began wrestling when he was 12. He wrestled for about four years and then started jiu-jitsu. When he was 15, he took interest in Pride FC and Japanese MMA, which inspired him to become an MMA fighter.

Carlyle has also trained and competed in catch wrestling. He was the middleweight (82 kg) runner-up at the Snake Pit World Championships 2023.

Carlyle compiled a 9-5 amateur record from 2011 until 2017.

Starting his professional career in 2017, Spike compiled a record of 8–1, fighting for a variety of regional California promotions, most notably for Legacy Fighting Alliance.

Carlyle made his UFC debut at UFC Fight Night: Benavidez vs. Figueiredo on February 29, 2020, as a late replacement for Steven Peterson against Aalon Cruz. He won the fight via first-round TKO.

Carlyle next faced Billy Quarantillo at UFC on ESPN: Woodley vs. Burns on May 30, 2020, in a catchweight bout. He lost the bout via a unanimous decision.

Carlyle faced Bill Algeo at UFC on ESPN: Smith vs. Clark on November 28, 2020. He lost the bout via unanimous decision.