Borders of Malaysia Borders of Malaysia The borders of Malaysia include land and maritime borders with Brunei, Indonesia and Thailand and shared maritime boundaries with China, Philippines, Singapore and Vietnam. Malaysia has a total land border length of 3,147.3 km. Malaysia's border with Brunei is 481.3 km in length. Except for its coastline with the South China Sea, Brunei is completely surrounded by Malaysia's state of Sarawak on the island of Borneo. Malaysia shares a land border with Indonesia on the island of Borneo. The Malaysian states of Sabah and Sarawak lie to the north of the border while the Indonesian provinces of
Indonesia–Malaysia border of the two countries under the 1969 continental shelf boundary. The border in the Celebes Sea is subject to dispute between the two countries. Part of the dispute was settled by the judgement of the International Court of Justice in the Ligitan and Sipadan Case in 2002 and is now awaiting delimitation between the two countries. The two countries however still have overlapping claims over the continental shelf which Indonesia refers to as Ambalat. There are numerous sea transport crossings between Indonesia and Malaysia, mostly between Indonesia's Sumatra island and Peninsula Malaysia but also between the Indonesian province of North