The present invention addresses the issue of providing a combine harvester in which the centre of gravity o f the m a chine body can b e set towards the centre in the left-right width direction o f a running machine body (1) by bringing an engine (7) close to a threshing apparatus (9), whilst facilitating maintenance operations of a running hydraulic pump (65). A combine harvester which is provided with a reaping apparatus (3), the threshing apparatus (9) comprising a threshing trunk (21), the running machine body (1) comprising a running part (2), and a hydraulic gear apparatus (66) comprising a running hydraulic pump (65) and a running hydraulic motor (69), and an engine (7) is mounted on the running machine body (1) and the output of the engine (7) i s transmitted to the running part (2) via the hydraulic gear apparatus (66), wherein the engine (7) is mounted on the upper surface of the running machine body (1) on the threshing apparatus (9) side, and the running hydraulic pump (65) is positioned on the machine outer- side surface of the engine (7) opposite the surface facing the threshing apparatus (9).
