Kalabahi is a town on Alor Island and it is the capital of Alor Regency in East Nusa Tenggara province of Indonesia. It is the only town on Alor Island. It lies on the north end of the narrow Kalabahi Bay, which is 16 kms long and 1 km wide, and separates the Bird's Head peninsula from the main part of the island. The town possesses the only puskesmas (health clinic) available in Teluk Mutiara District, in west Kalabahi.
It covers four kelurahan (villages) of the Teluk Mutiara District (Kalabahi Barat, Kalabahi Kota, Kalabahi Tengah and Kalabahi Timur), with a land area of 8.78 km<sup>2</sup> and a population of 19,210 according to the official estimates for mid 2023.
Note: The four kelurahan indicated by asterisks (*) are suburbs of Kalabahi town. Including them with Kalabahi town raises the population in mid 2023 to 33,507 and its area to 22.41 km<sup>2</sup>.
The town is served by Alor Island Airport.
Kalabahi has a tropical savanna climate (Aw) with a long dry season and a short wet season.