Thomas Mabon Radenhurst, QC (April 6, 1803 – August 7, 1854) was a lawyer and political figure in Upper Canada. He was born at Fort St. Johns (Saint-Jean-sur-Richelieu) in Lower Canada in 1803. His father, an immigrant from England, died in 1805. He was educated at John Strachan's school in York (Toronto) and then studied law with his cousin, in York. He was called to the bar in 1824 and then moved to Perth, the judicial seat of the Bathurst District. In 1828, he was elected to the 10th Parliament of Upper Canada representing Carleton County. He died at Perth in 1854.