Marc-André Barriault (born February 18, 1990) is a Canadian mixed martial arts (MMA) fighter who is currently signed to the Ultimate Fighting Championship's (UFC) Middleweight division.

[7] Barriault began competing in amateur mixed martial arts in 2012 under the tutelage of Sifu Patrick Marcil and finished with a record of 4–3.

[10] Returning to Middleweight Marc-André Barriault faced Andrew Sanchez in his promotional debut on May 4, 2019, at UFC Fight Night 151.

[16] Returning to action amidst the COVID-19 pandemic, Barriault faced Oskar Piechota on June 20, 2020, at UFC on ESPN: Blaydes vs.

[18] On December 4, 2020, the UFC announced that Barriault had accepted a six-month USADA suspension for testing positive in-competition for ostarine by the Nevada State Athlete Commission (NSAC) on June 20, 2020.

[23] Barriault faced Chidi Njokuani on February 5, 2022, at UFC Fight Night: Hermansson vs.

[25] Barriault faced Jordan Wright, replacing Roman Kopylov, on April 23, 2022, at UFC Fight Night 205.

[27] Barriault faced Anthony Hernandez on September 17, 2022, at UFC Fight Night: Sandhagen vs.

[34] Barriault was scheduled to face Michel Pereira on October 14, 2023, at UFC Fight Night 230.