Kula Gulf is a waterway in the Western Province of the Solomon Islands. It lies between the islands of Kolombangara to the west, Arundel Island (Kohinggo) to the southwest, and New Georgia to the south and east. To the north, it opens into New Georgia Sound ("the Slot"). To the southwest, it connects via Blackett Strait to Vella Gulf and the Solomon Sea.

During the Solomon Islands campaign in World War II, the Battle of Kula Gulf was fought here between the Imperial Japanese Navy and the United States Navy on the night of 5–6 July 1943.

Geography of the Solomon Islands