Baucau (Município Baucau, Munisípiu Baukau) is a municipality, and was formerly a district, of East Timor, on the northern coast in the eastern part of the country. The capital is also called Baucau (formerly Vila Salazar). The population of the municipality is 111,694 (census 2010) and it has an area of 1,506 km².
The word Baucau is derived from the word "Akau", which means "pig" in the local Waimoa language. During the Portuguese colonial era, the name of the district was transformed, first into Macau and finally into Baucau. An alternative name for the Baucau community is Wailia-Wailewa, meaning the "great water spring of Wai Lia". In the Wai Lia area (part of the suco of Bahu), a large spring is located under large trees; it is both an animist and Christian holy place.
In 1936, the Portuguese colonial authorities renamed what was then the district of Baucau as "São Domingos". However, that name, like other imperial-sounding names adopted in the colony at about that time, did not catch on, and a few years after World War II it was quietly abandoned.
