A suction filter includes: a casing having an intake port through which fuel is drawn; a filtration member to filter the fuel to be drawn into the intake port; and a wall component which defines a fuel passage for fuel which passes the filtration member toward the intake port. At least a part of the filtration member is located higher than the intake port. The wall component has an upper end positioned higher than the intake port, and the fuel passage is defined so that the fuel flowing through the fuel passage flows over the upper end.