Robert or Bob Warren may refer to:
Arts and entertainment Robert Penn Warren (1905–1989), American poet, novelist, and literary critic Robert Warren (artist) (born 1949), American artist and art instructor Robert Warren (musician), Australian bass guitar player Baby Boy Warren (Robert Henry Warren, 1919–1977), American blues singer and guitarist
Business and industry Sir Robert Warren, 1st Baronet (1723–1811), Anglo-Irish landowner and businessman Robert B. Warren (died 1950), American economist Robert J. Warren (1933–2022), American businessman, president emeritus of LECO Corporation
Law and politics Robert Warren (Irish politician) (1817–1897), Irish politician Robert W. Warren (1925–1998), American politician and judge in Wisconsin Robert D. Warren Sr. (1928–2013), American politician and educator
Sports Robert Warren (rugby union), Irish international rugby union player Bob Warren (footballer, born 1886) (1886–1963), English professional footballer Bob Warren (footballer, born 1927) (1927–2002), English professional footballer Bob Warren (basketball) (1946–2014), American basketball player
Others Robert Warren (ornithologist) (1829–1915), Irish ornithologist Robert H. Warren (1917–2010), United States Air Force general
See also Robert de Warren, British former ballet dancer, choreographer and artistic director Robert Warren Miller (born 1933), American-British entrepreneur and sailing champion