Robert, Bob, Bobby, or Rob Morrison may refer to:
Academics
Robert Hall Morrison (1798–1889), president of Davidson College
Robert J. H. Morrison (born 1961), Canadian academic
Rob Morrison (scientist) (born 1942), Australian zoological researcher and science communicator
Robert G. Morrison (born 1969), professor of religion
Politics
Robert F. Morrison (1826–1887), 13th Chief Justice of the Supreme Court of California
Robert Morrison, 1st Baron Morrison (1881–1953), British Labour Party politician
Robert Morrison (politician) (1909–1999), Arizona Attorney General 1955–1960
Rob Morrison (politician) (born 1956), Canadian politician
Sports
Association football (soccer)
Bob Morrison (footballer) (1869–1891), Irish footballer with Linfield
Bobby Morrison (footballer, born 1896) (1896–1974), English footballer
Bobby Morrison (footballer, born 1933) (1933–1999), Scottish footballer with Falkirk, Rangers, Workington
Robert Morrison (soccer) (1883–1952), Scottish-American soccer player
Robert Morrison (footballer) (1926–2016), New Zealand footballer
Other sports
Bobby Morrison (American football) (1945–2024), American college football player and coach
Robert Morrison (rower) (1902–1980), British rower
Others
Robert Morrison (missionary) (1782–1834), Protestant missionary
Robert Morrison (Phi Delta Theta) (1822–1902), one of the founders of Phi Delta Theta
Bob Morrison (songwriter) (born 1942), American country songwriter
Rob Morrison (journalist), American television journalist and news anchor
Robert Morrison (artist) (1941–2018), American artist and teacher