Meaning & Origin
A surname.
Truman is a boy's and girl's baby name of Old English origin, from the English surname meaning 'faithful man' or 'loyal man,' from Old English treowe (true/loyal) and man. President Harry S. Truman (1945-1953), who made the decision to use atomic weapons and presided over the beginning of the Cold War, gave the name its most prominent historical weight.
Over 15,835 U.S. births are recorded. Author Truman Capote added a literary dimension. It's a name of integrity and straightforwardness — the kind of name that means what it says.