Robert Wallace may refer to:

Politicians

• Ben Wallace (politician) (Robert Ben Wallace, born 1970), British MP for Wyre and Preston North
• Robert Wallace (MP for Greenock) (1773–1855), Scottish politician, MP for Greenock, 1832–45
• Robert Wallace (Canadian politician) (1820–1899), Canadian Member of Parliament
• Robert Wallace (Edinburgh MP) (1831–1899), British Member of Parliament for Edinburgh East, 1886–99
• Sir Robert Wallace (Perth MP) (1850–1939), Irish-born politician, MP for Perth, 1895–1907
• Robert M. Wallace (1856–1942), United States Representative from Arkansas
• Robert Wallace (British Army officer) (1860–1929), Irish lawyer, soldier and politician
• Jim Wallace, Baron Wallace of Tankerness (James Robert Wallace, born 1954), British Liberal Democrat Life Peer and MP for Orkney and Shetland, 1983-2001

Religious figures

• Robert Wallace (bishop) (died 1669), Bishop of the Isles, Scotland
• Robert Wallace (minister) (1697–1771), minister of the Church of Scotland and writer on population
• Robert Wallace (Unitarian) (1791–1850), English Unitarian minister

Others

• Robert Charles Wallace (1881–1955), Scottish-born Canadian geologist, educator, and administrator
• Robert Strachan Wallace (1882–1961), Australian academic, Vice-Chancellor of the University of Sydney, 1928–47
• Robert Wallace (biologist), discoverer of the Madidi titi, also known as the GoldenPalace.com monkey
• Robert Wallace (poet) (1932–1999), American poet and professor
• Robert Wallace (footballer) (1905–?), Scottish footballer
• Robert Wallace (professor) (1853–1939), Scottish professor of agriculture