Thomas Gaffin (1819–1869) was a 19th-century sculptor of Irish descent.
He was born in Swinford, County Mayo in Ireland, the son of Edward Gaffin (1780–1855), a sculptor and stone mason.
The family left Ireland and moved to London around 1800.
He specialised in ornate graves for the rich and famous; most of his work is in the south of England.
He died on 24 October 1869 and is buried in Kensal Green Cemetery.