Matt or Matthew Smith may refer to:
Artists
Entertainers
- Matt Smith (actor) (born 1982), English actor
- Matt Smith (drummer), jazz percussionist
- Matt Smith (guitarist), guitarist for the Australian band Thirsty Merc
- Matt Smith (musician), guitar player for the glam rock band Paris
- Matt "Money" Smith (born 1973), Southern California radio personality
- Matt Smith (The Real World) (born 1978), participant in The Real World
- Matt Smith (TV reporter), entertainment correspondent
- Matt Smith (voice actor) (born 1968), Canadian voice actor
Politicians
Sports
- Mattha Smith (1897–1953), Scottish footballer
- Matt Smith (broadcaster) (born 1967), BT Sport presenter
- Matthew Smith (field hockey) (born 1973), Australian field hockey player
- Matthew Smith (rower) (born 1977), American rower
- Matt Smith (baseball) (born 1979), American baseball pitcher
- Matt Smith (footballer, born 1982), English-born Australian professional footballer
- Matt Smith (rugby union) (born 1985), rugby union player with Leicester Tigers
- Matty Smith (born 1987), English rugby league player for Wigan Warriors
- Matt Smith (rugby union player born 1989), rugby union player with Cornish Pirates
- Matt Smith (footballer, born 1989), English professional footballer
- Matthew Smith (cricketer) (born 1990), English cricketer
- Matt Smith (rugby union player born 1996), rugby union player with Glasgow Warriors
- Matt Smith (duathlete) (born 1996), Australian duathlete
- Matty Smith (footballer, born 1997), Scottish footballer with Dundee United
- Matthew Smith (footballer, born 1999), Welsh international footballer
Other persons
- Matthew Smith, author of JFK: The Second Plot
- Matthew Smith (games programmer) (born 1966), British computer game programmer
- Matthew Smith (spy), 17th century spy and the author of Memoirs of Secret Service
- Matthew Smith, model, contestant in America's Next Top Model