Gregory David Smith (born 14 September 1960) is a former Australian politician.
He was a Liberal member of the Western Australian Legislative Council for Mining and Pastoral from 1997 to 2001.
Smith was born in Melbourne, Victoria.
A shearer and pastoralist, he moved to Western Australia in 1988.
He was elected to parliament in 1996 for a term commencing in 1997 and held his seat until he was defeated at the 2001 state election.