Tuor is a fictional character of J.R.R. Tolkien's Middle-earth.
Tuor was a great hero of the Third House of Men, the only son of Huor and Rían. He was the cousin of Túrin Turambar.
Huor died in the Nirnaeth Arnoediad in F.A. 471 (right before Tuor's birth), and Rían died two years later.
Tuor was first fostered by Elves, then captured by Easterlings, who had been sent there by Morgoth and who cruelly oppressed the remnant of the House of Hador.
Tuor later escaped, and lived the life of an outlaw. He was ordered by the Vala Ulmo to go to Gondolin, in order to warn the King Turgon. Passing through the old Gate of the Noldor into Nevrast, Tuor found arms and armour in the ruins of Vinyamar which had been left there centuries ago, then met Ulmo himself at the coast of Belegaer. Ulmo gave him a message for Turgon of Gondolin, and also sent him Voronwë, an Elf of Gondolin, to guide him.
Passing through the Fell Winter, Tuor and Voronwë eventually arrived in Gondolin, where Tuor remained, and eventually married Turgon's daughter, the Elf Idril Celebrindal. This was the second union between an Elf and a Man, after Beren and Lúthien. Their only child was Eärendil the mariner. Tuor was one of the leaders of Gondolin during the sack of the city by Morgoth, and with his wife and son and a remnant of its people escaped to the Mouths of Sirion. Tuor eventually built the ship Eärramë (Sea-wing) and sailed to the West with Idril, and it was a tradition under the Eldar and Edain that they arrived in Valinor, bypassing the Ban of the Valar, and that Tuor alone of Men was counted as Elven kindred, still living there now.