Sirombu is a district in West Nias Regency, North Sumatra, Indonesia, which is located on the west coast of Nias Island is bordered by the Indian Ocean, Kecamatn Mandrehe, and District Lölöwa’u. Sirombu is only ± 76 km from Gunung Sitoli which can be within ± 2.5 hours. Travel through the sea can also be made to have the Port of Sirombu Sea.

Sirombu sub-district within the area of 223.80 km ² is located in the coordinates 00 59 10.0 N and 97 30 04.0 E.

Sirombu is the capital district Tetesua, where there are in the offices of government. Before the tsunami Sirombu market is located in the coastal area of the Village Sirombu a distance of 4 km from Tetesua. Sirombu market has now relocated about 100 meters from the office in camat Tetesua built by IOM (International Organization for Migration) as much as 100 units loods closed. There is only 1 weekend each day that opened Saturday at the Pekan District Sirombu Beringin or Harimbale Mbawa tie is 12 km from Tetesua.