The Cotabato Provincial Board is the Sangguniang Panlalawigan (provincial legislature) of the Philippine province of Cotabato, also known as "North Cotabato".
The members are elected via plurality-at-large voting: the province is divided into three districts, the first district sending four members, and the second and third sending three members each to the provincial board; 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 Cotabato.
Aside from the regular members, the board also includes the provincial federation presidents of the Liga ng mga Barangay (ABC, from its old name "Association of Barangay Captains"), the Sangguniang Kabataan (SK, youth councils) and the Philippine Councilors League (PCL). Cotabato's provincial board also has a reserved seat for its indigenous people (IPMR).
These are the members after the 2025 local elections and 2023 barangay and SK elections