Rantau Panjang–Sungai Golok Bridge (Malay: Jambatan Rantau Panjang–Sungai Golok, Thai: สะพานโก–ลก), popularly called the "Harmony Bridge" (Malay: Jambatan Muhibah), is a road bridge crossing Kolok River (Malay: Sungai Golok) of the Malaysia–Thailand border, connecting Rantau Panjang town in Kelantan, Malaysia, with Su-ngai Kolok town in Narathiwat, Narathiwat Province, Thailand.

It spans to the south of the cross-border railway bridge Harmony-Bridge nearby.

It was built by the governments of both countries, and was officially opened on 21 May 1973 by both Malaysian Prime Minister Tun Abdul Razak bin Haji Dato' Hussein Al-Haj and Thai Prime Minister Field Marshal Thanom Kittikachorn.

The main part includes three spans, using prestressed concrete, with each length of 30.48 metres (100 ft).

Each end is connected to a ferroconcrete span, with length of 9.14 m (30 ft).