Provided is a variable-capacity oil pump capable of stably securing a required pump discharge volume and discharge pressure even if an oil filter has clogged or an electromagnetic valve has malfunctioned. The variable-capacity oil pump comprises: a first control oil chamber (31) that, using oil pressure from a main oil gallery (05), applies force in a direction in which the eccentricity of a cam ring decreases and a second control oil chamber (32) that, in combination with the spring force of a spring (18), applies a force in the direction that the eccentricity of the cam ring increases; a first branch flow path (3) that connects a main oil gallery and the first control oil chamber; and a second branch flow path (4) that branches from the first branch flow path and connects to the second control oil chamber via an electromagnetic switching valve (40). First and second oil filters (1, 2) are provided in the main oil gallery and the first branch flow path.