George Harold Smith (1866–1936) was a Reform Party Member of Parliament in New Zealand.
Smith was born at Masterton in 1866, the son of Major J. Valentine Smith.
Smith unsuccessfully contested the Pahiatua electorate in the 1899 election against the incumbent, John O'Meara, of the Liberal Party.
He won the Pahiatua electorate in a 1916 by-election after the death of the previous MP, James Escott, and retired in 1919.