Mat, Matt, Mathew or Matthew Beard may refer to:
- Mathew Beard (1870–1985), American longevity claimant
- Mat X. Beard, American state legislator from 1931 to 1937 (16th Oklahoma Legislature)
- Matthew "Stymie" Beard (1925–1981), American child actor in Our Gang
- Matt Beard (born 1978), English football manager for Bristol City W.F.C.
- Matthew Beard (English actor) (born 1989)