WORK MACHINE

Achieved are reduction of noise which is caused by air intake sound of a pre-cleaner, improvement of rear viewability and rear visibility of an operator, and extension of a maintenance interval of the pre-cleaner. A wheel loader () includes: an engine (); a hood () that covers, in an openable and closable manner, a space in which the engine () is contained and that has an air intake opening () through which air is taken into the space; an air cleaner () that is contained in the space and that is connected to the engine () via a first air intake pipe (); and a pre-cleaner () that is contained in the space and that is connected to the air cleaner () via a second air intake pipe ().