Robert Spencer Font[4] (born June 25, 1987) is an American professional mixed martial artist.

[5] Font was born in Massachusetts into a family with both parents being in the army, and moving around the world a lot due to their duties.

[6] Around the age of 21, Font was delivering pizzas for work, happening to make a delivery to fighters training in a garage.

Their garage practice piqued Font's interest and he was enrolled for a free week of mixed martial arts training at a local gym soon after.

[6] A native of Central Massachusetts, Font began training as an amateur in 2009 and compiled a record of 3–1 before making his professional debut in December 2011.

[7] Font compiled a record of 10–1 as a professional, competing for several regional promotions across his native New England before signing with the UFC in the spring of 2014.

[11] For his next bout, Font was expected to face Chris Beal on September 5, 2014, at UFC Fight Night 50.

[21] However, on the day prior to the event, Entwistle fell ill during the weight cutting process and the bout was scrapped.

[38] However, on June 5, 2019, it was reported that Stamann pulled out of the event due to an injury, and he was replaced by John Lineker.

[52] Despite significantly outstriking Vera, Font was dropped in three straight rounds and lost the fight via unanimous decision.

[55] Font faced Adrian Yañez on April 8, 2023, at UFC 287[56] He won the bout via TKO in the first round.

[58] Font was scheduled to face Song Yadong in a bout on the main card of UFC 292.

However Font was selected to replace Umar Nurmagomedov who pulled out of his bout against Cory Sandhagen in the main event at UFC on ESPN 50 on August 5, 2023.

[65] However, Cruz withdrew from the fight due to an injury and was replaced by undefeated prospect Jean Matsumoto in a catchweight bout of 140 lbs.