To provide a lightweight and high-strength grease filter having a low pressure loss while maintaining a high removal rate of an oil.

This grease filter made of a plate-like metal porous body having a three-dimensional net-like structure includes an uneven shape pattern at least on one face side. The one face side is an air suction face side, the uneven shape pattern is a waveform wherein a linear projecting part and recessed part are alternately repeated, and the linear projecting parts in the uneven shape pattern consist of a plurality of straight lines, and are disposed such that the extension direction of the plurality of straight lines is two or more directions in the one face including the uneven shape pattern.