The Bay of Dili is a bay on the north coast of East Timor adjacent to Dili, its capital city. The bay forms part of Ombai Strait, which separates the Alor Archipelago from the islands of Wetar, Atauro, and Timor in the Lesser Sunda Islands.

Ombai Strait is an international strait in Southeast Asia. It separates the Alor Archipelago from the islands of Wetar, Atauro, and Timor in the Lesser Sunda Islands. The strait is also the western portion of a pair of international straits, the other one being Wetar Strait; the two straits combine to link the Pacific Ocean with the Indian Ocean.