An oil strainer includes a main body, a tubular suction protrusion, and a partition. The main body has a bottom and is configured to filter an oil in an oil storage. The tubular suction protrusion protrudes from the bottom of the main body downward in a height direction along a height of the oil storage and has a suction port at a bottom end of the tubular suction protrusion. The main body is configured to suction the oil in the oil storage via the suction port. The partition protrudes downward in the height direction from the bottom of the main body and is provided apart from the suction port.
