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 four legislative districts of Laguna, as well as the lone congressional districts of Biñan, Calamba, and Santa Rosa since 2025.
Three additional ex officio members are the presidents of the provincial chapter of the Association of Barangay Captains, of the Sangguniang Kabataan, and of the Philippine Councilors League. The municipal and city (if applicable) presidents of the Association of Barangay Captains and of the Sangguniang Kabataan shall elect amongst themselves their provincial presidents who shall be their representatives at the board.
These are the members after the 2025 local elections and 2023 barangay and SK elections:
Notes:
Notes:
Notes: