Eketahuna is a small rural service town, the most southerly in the Tararua District in the Manawatu-Wanganui region of the North Island of New Zealand, but is considered to be in northern Wairarapa. It was called Mellenskov, but was renamed soon after its founding. The 2013 census recorded Eketahuna's population at 441; down from 456 in 2006. The town is located at the foot of the Tararua Ranges which lie to the west. It is 35 kilometres north of Masterton and a similar distance south of Palmerston North. It is situated on State Highway 2 and the eastern bank of the Makakahi River.