Clay Collard (born March 10, 1993) is an American professional mixed martial artist and former professional boxer. A professional since 2011, he formerly competed for the UFC. He currently competes in the lightweight division of the Professional Fighters League.

Collard grew up in Castle Dale, Utah. Collard started wrestling at the age of six, picking up boxing at the age of 11. Collard attended Emery High School, where he lettered in wrestling.

Collard took his first and only amateur mixed martial arts bout less than two weeks after his 18th birthday. He won the bout via 12-second knockout and subsequently turned professional to fight the next weekend. Collard competed solely in Utah regional circuit, amassing a 13–4 (1 NC) record before being signed to the UFC.

Collard made his promotional debut on August 23, 2014 as a short notice replacement against Max Holloway at UFC Fight Night 49, replacing an injured Mirsad Bektic. Collard lost the fight via TKO in the third round.

Collard next faced Alex White on December 6, 2014 at UFC 181. Collard won the fight via unanimous decision.

Collard faced Gabriel Benítez on June 13, 2015 at UFC 188. He lost the fight by unanimous decision.

Collard was expected to face Andre Fili on September 5, 2015 at UFC 191. However, Fili was forced out of the bout with injury and replaced by Tiago Trator. Collard lost the fight by split decision and was subsequently released from the promotion.

Collard was expected to headline LFA 75 against Arthur Estrázulas on September 6, 2019 but withdrew from the bout due to a short notice call from the UFC. After four years away from UFC, Collard returned to the promotion and was scheduled to face Devonte Smith on August 17, 2019 at UFC 241 replacing John Makdessi. However, on the fight week news surfaced that Collard withdrew from the fight due to an undisclosed reason and was replaced by promotional newcomer Khama Worthy. Following the ordeal, Collard was released from the promotion again.