Robert Farrell may refer to:

• Robert C. Farrell (born 1936), member of the Los Angeles City Council
• Robert S. Farrell Jr. (1906–1947), American Republican politician from the state of Oregon
• Robert Farrell (technical analyst), Merrill Lynch analyst and creator of Market Rules to Remember
• Robert Farrell (cyclist) (born 1949), Trinidad Olympic cyclist
• Robert Farrell (priest), Irish Anglican priest
• Robert Farrell, fictional super hero in Marvel Comics, known by the alias Rocket Racer
• Bob Farrell (motivational speaker) (1927–2015), American motivational speaker and author
• Bob Farrell (minstrel singer), American minstrel singer, best known for "Zip Coon"
• Bobby Farrell (1949–2010), lead singer of Boney M
• Bobby Farrell (footballer) (1906–1971), Scottish footballer
• Bob Farrell, singer on !Hero

• Robert Hugh Ferrell (1921–2018), historian