Legislative districts of Calamba

The legislative districts of Calamba are the representations of the component city of Calamba in the Congress of the Philippines. The city is currently represented in the lower house of the Congress through its lone congressional district.
History.
From 1907 to 1972, Calamba was represented in Congress as part of the first district of Laguna. The province of Laguna was represented in the Interim Batasang Pambansa as part of Region IV-A from 1978 to 1984, and elected four representatives at-large to the Regular Batasang Pambansa in 1984. Calamba was placed in the second district of Laguna in accordance with the apportionment ordinance of the new constitution which was proclaimed on February 11, 1987.
Calamba was separated from the second congressional district of Laguna by virtue of Republic Act No. 11078, which granted the city separate representation on September 24, 2018. The city elected its first representative in the 2019 elections.
Although Calamba is represented separately from the rest of Laguna in the House of Representatives of the Philippines, the city's residents remain part of the province's 2nd "Sangguniang Panlalawigan" district for the purpose of electing "SP" members.