Francis or Frank Foster may refer to:
Music
Frank Foster (jazz musician) (1928–2011), American jazz saxophonist
Frank Foster (country singer) (born 1982), American country singer-songwriter active since 2011
Politics
Frank Foster (Michigan politician) (born 1986), member of the Michigan House of Representatives in 2011–2014 Frank Foster (Australian politician) (1872–1948) Francis Foster (Tasmanian politician) (1888–1979)
Sports
Francis Foster (cricketer, born 1761) (1761–1847), English cricketer
Francis Foster (cricketer, born 1848) (1848–1931), English cricketer
Frank Foster (cricketer) (1889–1958), English cricketer
Frank Foster (rugby league) (1940–2019), English rugby player and coach
Others
Francis Foster, British-Venezuelan comedian and podcaster
Frank Hugh Foster (1851–1935), American clergyman of the Congregational church
Frank Keyes Foster (1854–1909), American labor leader
Frank William Foster (1887–1963), British Royal Air Force officer
Frank Foster (Coronation Street), fictional character
Frankie Foster, character in Foster's Home for Imaginary Friends
See also
Frances Foster (1924–1997), American actress
Francis M. Forster, physician and neurologist
Foster (surname)