Thomas Humphrey Metcalfe (also spelled Metcalf) (c. 1771 – March 16, 1790) was an American maritime fur trader who worked with his father, Simon Metcalfe. After being separated from his father in a storm, Thomas sailed a small schooner with a crew of four from the vicinity of China to Nootka Sound on Vancouver Island where he was arrested by the Spanish. After being released he sailed to Hawaii, hoping to find his father. Instead, he was attacked and killed by Native Hawaiians in revenge for misdeeds committed by his father just days before.