Robert Mitchell may refer to:
Politics
Australia
- Rob Mitchell (Queensland politician) (born 1948), member of the Queensland Legislative Assembly
- Rob Mitchell (Victorian politician) (born 1967), member of the Australian House of Representatives
Canada
- Robert Mitchell (Prince Edward Island politician), local Canadian politician
- Robert C. Mitchell (1931–2007), politician in Ontario, Canada
- Robert Wayne Mitchell (1936–2016), lawyer, civil servant and politician in Saskatchewan, Canada
- Robert Weld Mitchell (1915–1994), lawyer, member of the Canadian House of Commons for Ontario
New Zealand
- Robert Mitchell (New Zealand politician), elected 1868, from Otago, New Zealand
United Kingdom
- Robert James Mitchell (1912–1998), MP in the Northern Ireland Parliament for North Armagh
- Robert MacGregor Mitchell (1875–1938), British Member of Parliament
United States
- Robert Mitchell (congressman) (1788–1848), member of the US House of Representatives from Ohio
- Robert Mitchell (Wisconsin politician) (1826–1899), Wisconsin legislator
- Robert Byington Mitchell (1823–1882), governor of New Mexico territory and Civil War general
Sports
- Robert Mitchell (canoer) (born 1949), American canoer
- Robert Mitchell (cricketer) (1863–1926), Australian cricketer
- Robert Mitchell (athlete) (born 1980), British high jumper
- Robert Mitchell (water polo) (1913–1996), British water polo player and later Conservative member of the Greater London Council
Arts
- Robert Mitchell (engraver) (1820–1873), English engraver
- Robert Boyed Mitchell (1919–2002), Australian painter
- Robert Mitchell (jazz pianist) (born 1971), British jazz pianist and composer
- Robert Mitchell (organist) (1912–2009), American organist and silent film accompanist