Richard Day may refer to:

• Richard J. F. Day (born c. 1964), professor of sociology and cultural studies at Queen's University, Canada, scholar-activist
• Richard Day (printer) (1552–before 1607), English printer and clergyman
• Richard R. Day, professor of language learning at the University of Hawaii
• Richard Day (writer), American film and television writer, producer and director
• Richard Day (art director) (1896–1972), Canadian art director
• Dick Day (born 1937), American politician
• Dick Day (footballer) (born 1920), former Australian rules footballer
• Richard Digby Day (born 1941), British stage director
• Richard W. Day (1916–1978), principal of Phillips Exeter Academy