Robert Harrison is the name of:
Politics
- Robert Harrison (MP), Member of Parliament for Kingston upon Hull, 1515
- Robert Harrison (Brownist) (died 1585), English Protestant Separatist
- Robert Alexander Harrison (1833–1878), Ontario lawyer, judge, and political figure
- Robert Dinsmore Harrison (1897–1977), U.S. Representative from Nebraska
- Robert Leslie Harrison (1903–1966), Australian dairy farmer and Queensland Legislative Assemblyman
- Bob Harrison (Australian politician) (born 1934), member of the New South Wales Legislative Assembly
- Robbie Harrison, Canadian politician
Sports
Other
- Robert H. Harrison (1745–1790), American jurist
- Robert Harrison (publisher) (1904–1978), publisher of Confidential magazine
- Robert Harrison (financier), American lawyer, banker
- Robert Pogue Harrison (born 1954), professor of Italian literature at Stanford University
- Robert J. Harrison (born 1960), computational chemist
- Robert Harrison (surgeon) (1796–1858), president of the Royal College of Surgeons in Ireland
- Bobby Harrison (born 1939), drummer for Procol Harum
- Bob Harrison (born 1944), English radio DJ, presenter of Evening Extra on Manx Radio
- Robert Harrison, founder of the bands Cotton Mather and Future Clouds and Radar