Karl Roberson (born October 4, 1990) is an American former kickboxer and mixed martial artist who competed in the Middleweight division of the Ultimate Fighting Championship.

Raised in Neptune Township, New Jersey. Roberson played baseball at Neptune High School.

Roberson was called on short notice to fight K-1 legend Jérôme Le Banner at Fight Night Saint-Tropez 4 on August 4 in Saint-Tropez on his retirement fight. Although he was making his professional kickboxing debut, with only three amateur fights, he managed to upset Le Banner and score two knockdowns, first was ruled as a slip and during the second the referee proceeded with a slow count about 30 seconds that allowed him to recover, leading the fight to a controversial decision loss.

After earning three wins in amateur MMA, Roberson made his professional MMA debut May 2015. He fought sporadically over the next two years, obtaining a record of 5–0.

Roberson appeared in Dana White's Contender Series 3 on July 25, 2017 against Ryan Spann. He won the fight via elbow strikes in round one and he was award the UFC contract.

He made his debut on November 11, 2017 against Darren Stewart at UFC Fight Night: Poirier vs. Pettis. He won the fight via rear-naked choke submission in the first round.

Roberson faced Cezar Ferreira on May 12, 2018 at UFC 224. He lost the fight via technical submission in the first round.

Roberson faced Jack Marshman on November 3, 2018 at UFC 230. He won the fight via unanimous decision.