Laguna Provincial Board
The Laguna Provincial Board () is the Sangguniang Panlalawigan (provincial legislature) of the Philippine province of Laguna.

The members are elected via plurality-at-large voting: the province is divided into four legislative districts, the first and the second sending three members each and the third and fourth sending two members each; the number of the members the electorate votes depends on the number of members their district sends. The candidates with the highest number of votes in each district, depending on the number of members the district sends, are elected

The districts used in appropriation of members is coextensive with the legislative districts of Laguna.

List of members
An additional two ex officio members are the presidents of the provincial chapter of the Association of Barangay Captains and the Sangguniang Kabataan provincial president; the municipal and city (if applicable) presidents of the Association of Barangay Captains, and Sangguniang Kabataan, shall elect amongst themselves their provincial presidents which shall be their representatives at the board.

1st District
Cities: Biñan City, Santa Rosa City, San Pedro City 
Population (2010): 862,376

2nd District
Cities: Cabuyao City, Calamba City, Los Baños (Special Nature and Science City)
Municipality: Bay
Population (2010): 795,395

3rd District
Cities: San Pablo City
Municipalities: Alaminos, Calauan, Liliw. Nagcarlan, Rizal, Victoria
Population (2010): 511,005

4th District
City: None
Municipalities: Cavinti, Famy, Kalayaan, Luisiana, Lumban, Mabitac, Magdalena, Majayjay, Paete, Pagsanjan, Pakil, Pangil, Pila, Santa Cruz, Santa Maria, Siniloan
Population (2010): 501,071