To provide an air cooled type packaged compressor capable of restricting intrusion of dust into a package and a pressure loss of the air passing through a dust filter to the minimum and possible to be miniaturized and reduced in the production of noise.

In this air cooled type packaged compressor 1, a compressor main body is housed in the package 11 having a first air flow inlet 26 provided with a dust filter 29. The dust filter 29 is formed with a plurality of side surfaces 2A, 2B, 3A and 3B as a part of side surfaces forming columnar parts 2 and 3 having a triangle cross section and facing inside of the package 11.