James O. Robinson Jr. (1918–1967) was an American film actor.
He played the role of "Hambone" Johnson in Fontaine Fox's Mickey McGuire film series of short subjects.
During his Mickey McGuire days, Robinson also appeared in other films, such as Tenderfeet and Penrod and Sam.
After the McGuire series, Robinson continued to act, but mostly in bit parts.
Robinson died from an illness on 2 November 1967, at the age of 49, in his California home.