Sir Thomas Fitzwilliam (died 4 March 1497) was Speaker of the House of Commons of England in 1489–1490.
[1] He was born into a Lincolnshire gentry family, the son of Thomas Fitzwilliam of Mablethorpe and educated at the Inner Temple.
In 1467 he was returned as MP for Plympton Earle, then a seat under the control of the Crown.
After obtaining a house in Stepney, he was elected a Recorder of London and supported the claim of Richard III to the English throne.
He had married Margaret Harrington (d. 1498), with whom he had at least three sons, John, George, and William.