Robert Arnold

Robert Arnold may refer to:


 * Robert Arnold (basketball) (born 1988), basketball player
 * Robert Arnold (MP) (died c. 1408), English politician, MP for Winchelsea
 * Jake Arnold (athlete) (Robert Jacob Arnold, born 1984), American decathlete
 * Robert O. Arnold, chairman of the Georgia Board of Regents during integration
 * Robert Sterling Arnold (1905–2003), American shape note music publisher, singer, composer, and singing school teacher
 * Bob Arnold (c. 1911–1998), English actor
 * Rob Arnold (born 1980), Chimaira member