Batangas's 1st congressional district is one of the six congressional districts of the Philippines in the province of Batangas.

[3] The district consists of the western Batangas municipalities of Balayan, Calatagan, Lemery, Lian, Nasugbu, Taal and Tuy and the component city of Calaca.

It is currently represented in the 19th Congress by Eric Buhain of the Nacionalista Party (NP).

[4] Prior to its second dissolution in 1972, the first district encompassed the western Batangas municipalities of Agoncillo, Balayan, Calaca, Calatagan, Lemery, Lian, Nasugbu, San Luis, San Nicolas, Santa Teresita, Taal, and Tuy.

[6] Following the restoration of the Congress in 1987, it was reduced to eight municipalities that currently remain within its jurisdiction, while four other municipalities were reapportioned to the second and third districts, respectively.