The Supreme Bishop (Spanish: Obispo Máximo), abbreviated O.M., is the leader or primate of the autocephalous nationalist Independent Catholic denomination Iglesia Filipina Independiente (Philippine Independent Church) or IFI, known informally as the "Aglipayan Church".

The supreme bishop is the primate, spiritual head, and chief executive of the Philippine Independent Church.

The Executive Commission shall then elect an interim supreme bishop from its bishop-members, two weeks from such death or permanent disability.

Ultimately, the Executive Commission shall convene the General Assembly for a special election of a regular supreme bishop within thirty days from the death or permanent disability.

[10] The supreme bishop is responsible for the ecclesiastical government of the church and is the spiritual head of almost 7 million Aglipayans throughout the Philippines and some dioceses in the United States and Canada.