Bulacan Provincial Board

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

The members are elected via plurality-at-large voting: the province is divided into six Sangguniang Panlalawigan districts, and each district send two members since 2022; the number of candidates the electorate votes for and the number of winning candidates depends on the number of members their district sends. The vice governor is the ex officio presiding officer, and only votes to break ties. The vice governor is elected via the plurality voting system province-wide.

The districts used in appropriation of members is coextensive with the legislative districts of Bulacan, with the exception that the Legislative district of San Jose del Monte being a part of the 4th provincial board district.

District apportionment
In May 2024, the Supreme Court ordered the addition of two seats in the Board in favor of San Jose del Monte following a petition by Representative Florida Robes. Robes's Mandamus petition sought clarification of Republic Act No. 11546. In a 15-page landmark decision dated June 13, 2023, Justice Japar Dimaampao ordered the amendment of Commission on Elections's "Section 6 of Resolution 10707 to conform with Section 41(b) of Republic Act 7610 to give 2 seats for SJDM in the Sangguniang Panlalawigan."

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

Starting in 2017, the province also reserved a seat for its indigenous peoples.

Current members

 * Vice Governor: Alexis Castro (NUP)

1st District

 * City: Malolos
 * Municipalities: Bulakan, Calumpit, Hagonoy, Paombong, Pulilan
 * Population (2020): 758,872

2nd District

 * City: Baliwag
 * Municipalities: Bustos, Plaridel
 * Population (2020): 360,101

3rd District

 * Municipalities: Doña Remedios Trinidad, San Ildefonso, San Miguel, San Rafael
 * Population (2020): 419,539

4th District

 * Cities: Meycauayan, San Jose del Monte
 * Municipalities: Marilao, Obando
 * Population (2020): 1,191,917

5th District

 * Municipalities: Balagtas, Bocaue, Guiguinto, Pandi
 * Population (2020): 486,960

6th District

 * Municipalities: Angat, Norzagaray, Santa Maria
 * Population (2020): 491,501