
The national flag of the Philippines is a horizontal bicolor flag with equal bands of royal blue and crimson red, with a white, equilateral triangle at the hoist. In the center of the triangle is a golden-yellow sun with eight primary rays, each representing a province. At each vertex of the triangle is a five-pointed, golden-yellow star, each of which representing one of the country's three main island groups—Luzon, the Visayas and Mindanao. The white triangle at the flag represents liberty, equality, and fraternity. A unique feature of this flag is its usage to indicate a state of war if it is displayed with the red side on top, which is effectively achieved by flipping the flag upside-down.

Doña Marcela Mariño Agoncillo was a Filipina renowned as the principal seamstress of the first and official flag of the Philippines, gaining her the title of "The Mother of the Philippine Flag."

The flag of the Autonomous Region in Muslim Mindanao was the official vexillological device of the Autonomous Region in Muslim Mindanao (ARMM) that was used in secondary positions of honor to the national flag of the Philippines during the region's existence.

The flag of Bangsamoro is the flag which represents the Bangsamoro Autonomous Region in Muslim Mindanao, an autonomous region of the Philippines.

The Philippine coastwise emblem is a flag flown at main-mast of marine vessels engaged in coastwise trade in the Philippines. Coastwise trade in the country is defined as the transfer of either merchandise or passengers between two seaports in the Philippines.

Delfina Rizal Herbosa de Natividad was a Filipino renowned for being one of the three women, together with Marcela Agoncillo and her daughter Lorenza, who seamed together the Philippine flag, and for being the niece of the National Hero of the Philippines, José Rizal.

During the Philippine Revolution, various flags were used by the Katipunan secret society and its various factions, and later, after the Katipunan's dissolution, the Philippine Army and its civil government.

The flag of the president of the Philippines or the presidential standard of the Philippines consists of the presidential coat of arms on a blue background. While having the same design as the presidential seal since 1947, the flag has a separate history, and the designs on the flag and seal have at different times influenced each other.

The flag of the vice president of the Philippines consists of the vice presidential coat of arms on a white background. The current flag is defined in Executive Order 310 signed by President Gloria Macapagal Arroyo:The Flag of the Vice President of the Philippines shall consist of the Coat-of-Arms of the Vice President in proper colors, with a rectangular white background. The fringe shall be of knotted yellow silk. The ratio of the Flag shall be 1:2.
