望加锡海峡（Makassar Strait），是加里曼丹岛以东和苏拉威西岛以西之间的海峡，北通西里伯斯海，南连爪哇海和弗洛勒斯海，全长约800公里，平均宽250公里。两岸重要港口有巴厘巴板、望加锡等。

Makassar Strait is a strait between the islands of Borneo and Sulawesi in Indonesia. To the north it joins the Celebes Sea, while to the south it meets the Java Sea. The Mahakam River of Borneo empties into the strait.

Ports along the strait include Balikpapan in Borneo, and Makassar and Palu in Sulawesi. The city of Samarinda is 48 km (30 mi) from the strait, along the Mahakam.