Thomas Harris (1547–1610) was an English barrister and politician. He became serjeant-at-law in 1589.
He was a Member of the Parliament of England for Callington in 1584, Portsmouth in 1586 and 1589, Bossiney in 1593 and 1597, and Truro in 1601.
There is a monument to Harris and his wife, Dame Elizabeth Harris, at the parish church in Cornworthy, Devon.