Richard Mills may refer to:

• Richard Mills (composer) (born 1949), Australian composer and conductor
• Richard Charles Mills (1886–1952), Australian economist and academic
• Richard Henry Mills (1929–2023), U.S. federal judge
• Richard Mills (cricketer) (1798–1882), English cricketer
• Richard M. Mills Jr. (born 1959), U.S. diplomat and ambassador to Armenia as of 2015
• Richard P. Mills (educator) (1944–2017), American educator
• Richard P. Mills (general) (born 1950), United States Marine Corps general
• Rick Mills (born 1957), American glass artist
• Dick Mills (born 1936), British sound engineer
• Dick Mills (baseball) (1945–2015), Major League Baseball pitcher

• Richard Milles (c. 1735–1820), MP for Canterbury