The Golok River (Thai: แม่น้ำโกลก, RTGS: Maenam Kolok, Thai pronunciation: ; Malay: Sungai Golok) is a river that lies on the border between Malaysia and Thailand. It is spanned only by the Malaysian-Thai friendship bridge. The name of the river in Malay is Sungei Golok, meaning "River of Swords".
It borders the Malaysian state of Kelantan and the Thai province of Narathiwat. The friendship bridge connects the Malaysian town of Rantau Pajang and the Thai town of Sergei Golok. Rantau Pajang is a duty free zone.
The river flows into the Gulf of Thailand at Tak Bai district, Narathiwat Province. It floods seasonally with the monsoon. An unusually large flood occurred on 21 December 2009, causing an evacuation of parts of Kelantan.
- "Rantau Panjang & Golok River". Life in Penang, is more than beautiful. Retrieved 2010-09-07.
- "Golok river floods Kelantan forcing 440 to Evacuate.". Demotix. Retrieved 2010-09-07.