To provide sufficient cooling performance of an engine and working fluid in relation to a working machine even if the working machine is relatively small.

This working machine is provided with the engine 11, a hydraulic pump 12 driven by an engine 12, and a cooling device 13 composed of a cooling fan 14 and cooling apparatuses 13a, 13b receiving cooling air from the cooling fan and cooling the engine 11 and/or working fluid pressurized by the hydraulic pump 12 on a machine body. The engine 1 and the cooling device 13 are arranged in series or roughly in series, and the hydraulic pump 12 is arranged at a downstream position of the cooling fan 14 where cooling air flows between the engine 11 and the cooling device 13.