Lamedon was a region and fiefdom in southern Gondor.
Lamedon was a series of valleys lying south of the White Mountains. Its chief town was the city of Calembel, where Aragorn and the host of the Dead camped during their journey to Pelargir during the War of the Ring.
The river Ciril flowed south through Lamedon.
At the end of the Third Age, its lord was the Angbor, who did not send any men to Minas Tirith, as he and his men tried to defend the southern city of Linhir near the mounds of the river Gilrain against Southrons from the Haven of Umbar and Harad. Therefore only some scattered "woodsmen" came to Minas Tirith's aid from Lamedon.
Angbor lord of Lamedon, marshalled a force of 4,000 men to help garrison Minas Tirith after Aragorn had taken Pelargir from the Corsairs of Umbar. Angbor arrived at Minas Tirith after Aragorn had left with his host for the Black Gate, so he his force helped to with the defense of the city in case the battle at the Black Gate went ill.
Lamedon was also one of the most densely populated regions of Gondor.