The flags of the provinces of the Philippines are the vexillological devices used by various provincial-level local government units (LGUs) of the country.

Designs The most common provincial flag design is a plain field of a single color with the provincial seal placed in the center; of this design the most prevalent field color used is white, followed by shades of yellow, of green and of blue. Some of these plain flags have additional text above and/or below the seal, usually involving the province name.

Several provincial flags deviate from the default design: some are horizontal or vertical tribands, usually employing three different colors (i.e., a tricolor); some also use charges derived from elements within provincial seals, instead of using the entire provincial seal.

Usage Most of the provincial flags, by virtue of bearing the corporate seal of the LGU, are solely intended to represent the provincial government wherever they are displayed, and not meant to be adopted by the public for general use. Such government flags only find usage within provincial government premises (e.g., provincial capitol grounds; provincial government office spaces such as that of the governor; Sangguniang Panlalawigan chambers; or provincially-owned sports or recreational facilities) and are most visible to the public during events involving the provincial government. The designs of many of these government flags can be easily changed between administrations, especially when the provincial seal itself is altered (e.g., Ilocos Norte; Marinduque); at times they reflect the personal preferences of the provincial governor in power (e.g., use of the blue flag for Laguna during the term of Emilio Ejercito from 2010 to 2014; use of "Oriental Negros" in the provincial flag and seal during the term of George Arnaiz from 2004 to 2007).

The flags of some provinces have provincial board (PB) or Sangguniang Panlalawigan (SP) resolutions or ordinances specifying their designs and specifications; therefore the modification of these flags will require amending or repealing previous legal enactments made by the provincial legislative body. Some flags with legally specified designs, such as those of Bohol, Bukidnon and Southern Leyte, are allowed to be adopted by the general public as a symbol of civic pride for the province, and thus serve dual purpose as both a government and a civic flag.

At least two provinces — Camarines Norte and South Cotabato — maintain two vastly different official flag designs: one for exclusive government use (i.e., a plain white flag with the provincial seal in the center) and another for civic use.

List of current provincial flags RegionProvinceImageFlag DescriptionDate of Adoptionor First Use[Legal Basis]CARAbraPlain green field with the provincial seal in the center. Flag proportion is approximately 2:3.Region 13Agusan del Norte Plain golden yellow field with the provincial seal in the center. Flag proportion is approximately 2:3.Governor's office version: Plain golden yellow field, centered within which are the provincial seal and a line of text in black serif typeface ("AGUSAN DEL NORTE") below the seal; this flag's proportion is approximately 1:2. Region 13Agusan del SurPlain yellow field with the provincial seal in the center. Flag proportion of the most common outdoor flag variant is 2:3.Region 6Aklan Governor's office (gold) version [left, top]: Plain golden yellow field, centered within which are the provincial seal and a line of text in black sans serif typeface ("PROVINCE OF AKLAN") set in a wide arc above the seal. Flag proportion is approximately 2:3.

Sangguniang Panlalawigan chamber (white) version [left, bottom]: Plain white field with the provincial seal in the center; flag proportion is approximately 2:3.Region 5Albay Plain white field with the provincial seal in the center. Flag proportion of the most authoritative variant [left, top] is 1:2.

Governor's office version [left, bottom]: Plain white field, centered within which are the provincial seal and a line of text in red sans serif typeface ("PROVINCE OF ALBAY") below the seal; this flag's proportion is approximately 1:2.Region 6AntiquePlain deep green field with the provincial seal in the center. Flag proportion of the most authoritative variant is approximately 3:5.CARApayaoPlain golden yellow field, centered within which are the provincial seal and a line of text in green serif typeface ("PROVINCE OF APAYAO") below the seal. Flag proportion is approximately 2:3.Region 3Aurora Plain green field with the provincial seal in the center. Flag proportion is approximately 1:2. ca. 2015Previous flags (white field, with provincial seal in center and additional text in various configurations) were last used in mid-2015: BARMMBasilanRegion 3BataanPlain white field with the provincial seal in the center. Flag proportion is approximately 1:2.Region 2BatanesPlain maroon field with the provincial seal in the center. Flag proportion of the most authoritative variant is approximately 1:2.current seal: ca. 1995Region 4-ABatangasHorizontal tricolor of royal blue (top), white (middle) and red (bottom) stripes, with the escutcheon from the provincial seal in the center. Official flag proportion is 1:2.December 8, 2023CARBenguetPlain white field with the provincial seal in the center. Most common flag proportion is 1:2.Region 8BiliranPlain navy blue with the provincial seal in the center. Flag proportion is approximately 1:2.Region 7BoholVertical tricolor of navy blue (hoist), white (middle) and red (fly) panels, with a central charge — consisting of a tableau of the Sandugo enclosed by the Chocolate Hills and two swords, plus a blue five-pointed star fimbriated yellow (always on the observer's right, even in the reverse side) — all contained in the white panel. Official flag proportion is 1:2.1971[Provincial Board Res. No. 121]Region 10BukidnonHorizontal tricolor of white (top), red (middle) and black (bottom), charged in the center with a golden emblem consisting of a spear pointing downward toward the fly, and a shield bearing the stylized profile of the Kitanglad mountain range. Official flag dimensions are 34 inches in width and 64 inches in length, or a flag proportion of 17:32.Region 3Bulacan Plain green field with the provincial seal in the center. Most common flag proportion is 1:2. Region 2CagayanHorizontal tricolor of navy blue (top), golden yellow (middle) and green (bottom), charged with the provincial shield ringed by 29 white, five-pointed stars, all placed toward the hoist. Official flag proportion is 1:2.11 March 1970[Provincial Board Res. No. 319]Region 5Camarines NorteGovernment flag [left, top]: Plain white field with the provincial seal in the center; government flag's proportion is approximately 1:2.

Civil flag [left, bottom]: Vertical tricolor of green (hoist), white (middle) and yellow (fly); civic flag's proportion is approximately 1:2.Region 5Camarines Sur Plain royal blue field with the provincial seal in the center. Flag proportion is approximately 1:2.Region 10CamiguinPlain green field with a modified version of the provincial seal in the center. Flag proportion is approximately 1:2.Region 6Capiz Plain light blue field with the provincial seal in the center. Most common flag proportion is approximately 1:2.Region 5CatanduanesPlain green field with the provincial seal in the center. Most common flag proportion is 1:2.Region 4-ACavitePlain white field with the provincial seal in the center. Most common flag proportion is 1:2.Region 7Cebu Plain yellow field with the provincial seal in the center. Flag proportion of the most authoritative indoor variant [left, top] is approximately 1:2 while the outdoor variant [left, bottom] is approximately 3:5.Region 12CotabatoPlain white field with the provincial seal in the center. Flag proportion is 4:5.current flag: ca. 2018

current seal: 2014Region 11Davao de OroSepia brown field with the provincial seal in the center.First known public display of the flag was in March 2020: current flag: March 2020

current seal: January 2020The revised seal bearing the new name of the province was unveiled in January 2020: Region 11Davao del NortePlain light blue field with the provincial seal in the center. Most common flag proportion is 1:2.Region 11Davao del SurPlain royal blue field with the provincial seal in the center. Most common flag proportion is 1:2.Region 11Davao OccidentalPlain green field with the provincial seal, itself placed over a yellow five-rayed sun, in the center. Two lines of white text surround the seal and sun: above, set in a wide arc, are the words "PROVINCE OF DAVAO OCCIDENTAL" written in a large serif typeface, while below, in a straight line, are the words "OFFICIAL SEAL" written in a sans serif typeface. Flag proportion is approximately 4:7.current flag: 2017