Tenasserim Hills
![](/Images/godic/202502/15/Death_Railway-River_Kwai2206.JPG")
![](/Images/godic/202502/15/Tenasserim_Hills-Southeast_asia2206.jpg")
![The Khao Sok mountains, Surat Thani, Thailand, towards the southern end of the Tenasserim Range](/Images/godic/202502/15/KhaoSok042207.jpg")
![Unnamed Lesser Peak of Mount Tahan in the highest area of the range, Pahang State, Malaysia](/Images/godic/202502/15/Unnamed_Lesser_Peak,_Gunung_Tahan._Snapped_from_Kem_Botak2207.jpg")
Tenasserim Hills or Tenasserim Range (Burmese:တနင်္သာရီ တောင်တန်း, [tənɪ̀ɴθàjì tàʊɴdáɴ]; Thai:ทิวเขาตะนาวศรี rtgs: Thiokhao Tanao Si, [tʰiw.kʰǎw ta.naːw sǐː]; Malay:Banjaran Tenasserim) is the geographical name of a roughly 1,700 km long mountain chain, part of the Indo-Malayan mountain system in Southeast Asia.