Robert Fitzgerald may refer to:

• Robert D. FitzGerald (1830-1892), Irish-Australian botanist and surveyor
• R. D. Fitzgerald (1902?1987), Australian poet and grandson of the above botanist/surveyor
• Robert Fitzgerald (1910?1985), American classicist and translator of ancient Greek and Latin
• William Robert Fitzgerald Collis (1900?1975), Irish Red Cross doctor who worked in Bergen-Belsen after its liberation
• Robert FitzGerald, 19th Earl of Kildare
• R.A. Fitzgerald (1834-1881), English cricketer

It may also refer to:

• Robert Fitzgerald Prosody Award, an award given to scholars who have made a lasting contribution to the art and science of versification