Matt or Mat is a male given name, often used as a nickname for Matthew. Less commonly, it is used as a surname.
Athletes
- Matt Acton, Australian association football player
- Matt Adams, American baseball player
- Matt Ammendola (born 1996), American football player
- Matt Araiza (born 2000), American football player
- Matt Asiata, American football player
- Matt Bahr, American football player
- Matt Ballin, Australian rugby league player
- Matt Barnes (disambiguation), multiple people
- Matt Beaty, American baseball player
- Matt Bentley, American professional wrestler
- Matt Besler, American footballer
- Matt Bessette, American mixed martial artist
- Matt Biondi, swimmer
- Matt Birk, American football player
- Matt Blake, American baseball coach
- Matt Blair, (1950–2020), American football player
- Matt Borgschulte, American baseball coach
- Matt Bradley, Canadian ice hockey player
- Matt Bradley (American football), American football player
- Matt Brash (disambiguation), multiple people
- Matt Bryant, American football player
- Matt Brennan (American football), American football player
- Matt Bullard, former basketball player
- Matt Burke (rugby union, born 1973), Australian rugby union player
- Matt Buschmann (born 1984), American baseball player and coach
- Matt Bush (disambiguation), multiple people
- Matt Bushman (born 1995), American football player
- Matt Cain, American baseball player
- Matt Carpenter (baseball), American baseball player
- Matt Carroll (basketball) , American basketball player
- Matt Cassel, American football player
- Matt Cavanaugh, American football player
- Matt Chapman, American baseball player
- Matt Coates, Canadian football player
- Matt Cole (born 1996), American football player
- Matt Coleman III (born 1998), American basketball player for Hapoel Haifa of the Israeli Basketball Premier League
- Matt Cook (ice sledge hockey) (1987–2010), Canadian ice sledge hockey player
- Matt Cook (rugby league) (born 1986), English rugby union and rugby league footballer
- Matt Cooke (born 1978), Canadian ice hockey player
- Matt Corral (born 1999), American football player
- Matt Crafton, American racecar driver
- Matt Davidson (baseball), American baseball player
- Mat Dawson (born 1972), English retired rugby union player
- Matt Dermody, American baseball player
- Matt DiBenedetto, American race car driver
- Matt Dickerson, American football player
- Matt Duchene, Canadian hockey player
- Matt Duffie, New Zealand rugby union footballer
- Matt Duffy (born 1991), American baseball player
- Matt Duffy (baseball, born 1989), American baseball player
- Matt Dunigan, Canadian Football league
- Matt Elliott (footballer), Scottish footballer
- Matt Entz, American football coach
- Matt Erickson (born 1975), American baseball player and coach
- Matt Farniok (born 1997), American football player
- Matt Feiler, American football player
- Matt Fish, basketball player
- Matt Flanagan (American football) (born 1995), American football player
- Matt Flynn, American football player
- Matt Forte, American football player
- Matt Foster, American baseball player
- Matt Gage, American baseball player
- Matt Garstka (born 1989), American drummer
- Matt Garza, American baseball player
- Matt Gay (born 1994), American football player
- Matt Gillett, Australian rugby league player
- Matt Giteau, Australian rugby union footballer
- Matt Goncalves (born 2001), American football player
- Matt Gono (born 1996), American football player
- Matt Hamilton (curler), American curler
- Matt Hanousek, American football player
- Matt Hardy, American professional wrestler
- Matt Harvey, American baseball player
- Matt Hasselbeck, American football player
- Matt Hayden, professional cricketer
- Matt Hazeltine, American football player
- Matt Hedges, American footballer
- Matt Hennessy (born 1997), American football player
- Matt Henningsen (born 1999), American football player
- Matt Hernandez, American football player
- Mat Hoffman (born 1972), American BMX rider
- Matt Holland, footballer
- Matt Holliday, American baseball player
- Matt Hughes (fighter), American mixed martial artist
- Matt Jones (basketball) (born 1994), American basketball player
- Matt Jones (Australian footballer) (born 1987), Australian rules footballer
- Matt Jones (footballer, born 1980), Welsh international football player
- Matt Jones (footballer, born 1986), English football goalkeeper for Belenenses
- Matt Jones (golfer) (born 1980), Australian professional golfer
- Matt Jones (ice hockey) (born 1983), American ice hockey defenseman
- Matt Jones (rugby union) (born 1984), Welsh international rugby union player
- Matt Jones (running back) (born 1993), American football running back
- Matt Jones (wide receiver) (born 1983), American football wide receiver
- Matt Kalil (born 1989), American football
- Matt Kaskey (born 1997), American football player
- Matt Kemp, American baseball player
- Matt Kenseth, 2003 NASCAR Winston Cup Champion
- Matt Kilroy, American baseball player
- Matt Koch, American baseball player
- Matt Kohn, American football player
- Matt LaFleur, American Football Coach
- Matt Landers (born 1999), American football player
- Mat Latos (born 1987), American Major League Baseball pitcher
- Matt Lee, Canadian professional wrestler, better known as Shane Matthews
- Matt Leinart (born 1983), American football player
- Matt Leo (born 1992), Australian-American football player
- Matt Lentz (born 1982), American football player
- Matt Lesperance (born 1987), American wheelchair basketball player
- Matt Le Tissier, former English International association football player
- Matt Light, (born 1978), American football
- Matt Lloyd (footballer), Australian rules footballer
- Matt Lloyd (Paralympian) (born 1972), British ice sledge hockey Paralympian
- Matt Manning (born 1998), American baseball player
- Matt Manning (rugby league) (born 1974), Australian rugby league footballer
- Matt McCrane (born 1994), American football player
- Matt McGloin (born 1989), American football player
- Mat Mendenhall (born 1957), American former National Football League player
- Matt Mervis (born 1998), American baseball player
- Matt Milano (born 1994), American football player
- Matt Millen (born 1958), American Football player
- Matt Moore (disambiguation), several people
- Matt Morgan (wrestler), American professional wrestler
- Matt Morris (baseball), retired baseball player
- Matt Moylan, Australian rugby league player
- Matt Mullins, American martial artist
- Matt Murray (ice hockey, born 1994), Canadian Ice Hockey
- Matt Nagy, American football player
- Matt Neal a British touring car driver
- Matt Olson, American baseball player
- Matt Orzech (born 1995), American football player
- Matt Osborne, professional wrestler
- Matt Patricia, American football coach
- Matt Peacock (disambiguation), multiple people
- Matt Peart (born 1997), Jamaican-American football player
- Matt Perry (rugby player), English rugby union footballer
- Matt Postle, Welsh racing cyclist
- Matt Prater, American football player
- Matt Prince, a.k.a. Wifebeater, American professional wrestler
- Matt Pryor (American football) (born 1994), American football player
- Matt Quatraro (born 1973), American baseball coach
- Mat Rebeaud (born 1982), Swiss freestyle motocross rider
- Matt Reiswerg (born 1980), American soccer player, coach, and administrator
- Matt Reynolds (American football) (born 1986), American football player
- Matt Reynolds (baseball coach), American college baseball coach
- Matt Reynolds (infielder) (born 1990), American baseball player
- Matt Reynolds (pitcher) (born 1984), American baseball player
- Matt Rhule (born 1975), American football coach
- Mat Robinson (born 1986), Canadian ice hockey player
- Matt Robinson (American football) (born 1956), American football player
- Matt Robinson (footballer, born 1907) (1907–1987), English football player
- Matt Robinson (footballer, born 1993), English football player
- Matt Robinson (rugby league) (born 1990), New Zealand rugby league player
- Mat Rogers (born 1976), Australian former rugby league footballer
- Matt Ruff (born 1990), Football player
- Matt Ryan (American football), American football player
- Matt Scoggin, American diver
- Matt Schaub, American football player
- Matt Simms (American football) (born 1988), American football player
- Matt Snell (born 1941), American football player
- Matt Sokol (born 1995), American football player
- Matt Stairs (born 1968), baseball player
- Matt Stajan, ice hockey player
- Matt Stover, American former football player
- Matt Strahm, American baseball player
- Matt Swarmer, American baseball player
- Matt Thaiss, American baseball player
- Mat Toshack (born 1973), Australian former rugby league footballer
- Matt Turk, American football player
- Matt Vierling, American baseball player
- Matt Vogler, American football player
- Matt Waletzko (born 1999), American football player
- Matt Wallner, American baseball player
- Matt Ward (lacrosse player), American lacrosse player
- Matt Wieters, American baseball player
- Matt Williams (third baseman), American baseball player
- Matt Wise (born 1975), American baseball player and coach
- Matt Wisler, American baseball player
Musicians
- Matt Bellamy, guitarist, pianist and lead singer of Muse
- Matt Berninger, frontman and lead singer of The National
- Matt Bettinelli-Olpin, original guitar player and co-songwriter for influential punk/ska band Link 80
- Matt Cameron, former Soundgarden drummer and current drummer of Pearl Jam
- Matt Champion (born 1995), member of boy band Brockhampton
- Matt Costa, singer/songwriter from Huntington Beach, California
- Matt Freeman, bassist for the bands Operation Ivy and Rancid
- Matt Garstka, drummer for metal band Animals as Leaders
- Matt Helders, drummer for the Arctic Monkeys
- Matt Heafy, vocalist and guitarist for the metal bands Trivium and Capharnaum
- Matty Healy, vocalist and frontman of English pop rock band The 1975
- Matt Hoopes, lead guitarist for the band Relient K
- Matt Houston (singer), French R&B singer and music producer originating from Guadeloupe (aka Matt)
- Matt Hunter (singer) (born 1998), American Latin-influenced pop singer, now known as Matt Hunter Correa
- Matt Johnson (singer), founder and only constant member of multimedia band The The
- Mat Kearney (born 1978), American singer-songwriter and musician
- Matthew Lewin, producer and member of American synthpop group Magdalena Bay
- Matt Maher, Canadian contemporary Christian music artist, songwriter, and worship leader
- Matt Maeson, American singer-songwriter
- Matt Maltese, English singer-songwriter
- Matt Monro, British singer
- Mat Osman (born 1967), English musician, bassist of the rock band Suede
- Matt Redman (born 1974), English musician
- Matt Shadows, vocalist for Avenged Sevenfold
- Matt Sharp, former member of Weezer
- Matt Simmonds, demoscene musician
- Matt Slocum, former member of Sixpence None the Richer and composer of "Kiss Me"
- Matt Sorum, hard rock drummer and percussionist
- Matt Traynor, former drummer of Blessthefall
- Matt Tuck, singer for Bullet for My Valentine
- M. Ward, singer-songwriter and guitarist
- Matt Quinn, lead singer of indie-folk band Mt. Joy
- Matt Shultz, lead singer of Cage The Elephant
Actors
- Mat Baynton (born 1980), British actor and musician
- Matt Bennett (born 1991), American actor
- Matt Berry (born 1974), British actor and musician
- Matt Bomer (born 1977), American actor
- Matt Cohen (actor) (born 1982), American actor
- Matt Czuchry (born 1977), American actor
- Matt Dallas (born 1982), American actor
- Matt Damon (born 1970), American actor
- Matt Dillon (born 1964), American actor
- Mat Fraser (fl. 1980s-present), English actor
- Matt Hobby (born 1985), American actor and comedian
- Matt L. Jones (born 1981), American actor and comedian
- Matt Lanter (born 1983), American actor
- Matt LeBlanc (born 1967), American actor
- Matt Lintz (born 2001), American actor
- Matt McCooey (born 1981), English-Japanese actor
- Matt Murray (actor) (born 1989), American actor
- Matt Newton (born 1977), American actor
- Matt Prokop (born 1990), American actor
- Matt Robinson (actor) (1937–2002), American actor
- Matt Ryan (actor) (born 1981), Welsh actor
- Matt Shipman, American voice actor
- Matt Shively (born 1990), American actor
- Matt Smith (actor) (born 1982), English actor
- Matt Stone (born 1971), American actor
- Mat Stevenson (born 1969), Australian actor
- Matt Zimmerman (actor) (1934–2022), Canadian actor
- Matt Walsh (comedian) (born 1964), American comedian and actor
Politicians
- Matt Bevin (born 1967), American politician
- Matt Blunt (born 1970), American politician and former naval officer
- Matt Cartwright (born 1961), American politician
- Mat Erpelding (born 1975), American politician
- Matt Gaetz (born 1982), American politician
- Matt Gonzalez, Green Party politician
- Matt Jeneroux (born 1981), Canadian politician
- Matt Jones (American politician), American politician
- Matt Lesser, American politician
- Matt Mead (born 1962), American politician and attorney
Writers, journalists and editors
Other
- Matt Allwright, British television presenter
- Matt Clark (baseball) (born 1986), American professional baseball player
- Mat Collishaw (born 1966), English photographic and video artist
- Matt Cook (historian), Birkbeck College professor
- Mat Dickie, English indie video game developer
- Mat Franco (born 1988), American magician and winner of the ninth season of America's Got Talent
- Matt Groening, best known as the creator of The Simpsons and Futurama
- Matt Gunther, American artist
- Matt Harding, Internet celebrity better known as "Dancing Matt"
- Matt Harvey (born 1989), American professional baseball player
- Matt Iseman, American comedian and host of American Ninja Warrior since Season 2
- Matt Jones (interaction designer) (born 1968), active researcher and organizer of scientific conferences
- Matt Kemp (born 1984), American professional baseball player
- Mat Kirkby, English filmmaker, winner of the 2015 Academy Award for Best Live Action Short Film
- Matt Klentak (born 1980), American professional baseball executive
- Matt Kuwata, also known as Matt Rose, (born 1994), Japanese tarento, model, and musician
- Matt Lucas (born 1974), British comedian, best known for Little Britain
- Matt Mullenweg (born 1984), cofounder of WordPress and CEO of Automattic
- Matt Moore (baseball) (born 1989), American professional baseball player
- Matt Morgan (comedian), comedian and comedy writer
- Matt Nelson (disambiguation), multiple people
- Matt Pritchett, cartoonist in the UK Daily Telegraph
- Matt Sauer (born 1999), American professional baseball player
- Matt Taylor (scientist), project scientist for the Rosetta mission
- Matt West, choreographer
- Matt West (baseball), American professional baseball player
- Matthew Bevilaqua, a main character in the second season of The Sopranos
- Matt the Radar Technician, one-time Saturday Night Live character played by Adam Driver
- Matrim "Mat" Cauthon, a character in the Wheel of Time fantasy series
- Matt Del Marco, a character in the Netflix series Grand Army
- Matt Foley, Saturday Night Live parody character
- Matt Horner, in the StarCraft franchise
- Matt (Death Note) (real name: Mail Jeevas), in the anime Death Note
- Matt Jensen, a character in the Netflix series 13 Reasons Why
- Matt Murdock, secret identity of the Marvel Comics Earth-616 superhero Daredevil
- Matt Murdock, secret identity of the Marvel Comics Earth-65 supervillain Kingpin
- Matt Oleander, in Degrassi: The Next Generation
- Matt Robinson (Neighbours), in the Australian soap opera Neighbours
- Matt Ishida, Digimon Adventure
- Matthew "Matt" Taylor, one of eight protagonists from the survival horror game Until Dawn
- Matt Trakker, a character from the cartoon M.A.S.K. (TV series)
- Matt, main character in Cyberchase
- Matt Holt, older brother of Pidge from Voltron: Legendary Defender
- Matt, a character in the internet series Eddsworld
- Matt, a non-playable Mii opponent in the Wii series
- Matthew (Matt) Freeman, a character in Anthony Horowitz's The Power of Five Series. He is the main protagonist in Raven's Gate and Evil Star, one of the main characters in Necropolis and Oblivion, and appears briefly in Nightrise.
- Mat, The tall, slimmer and red shirted character from a czech series Pat & Mat
- Officer Matt Parkman, a character from the tv show Heroes