Abstract: A riding mower includes a pair of right and left propelling wheels, an engine disposed rearwardly of axles of the propelling wheels, a pair of right and left transmission cases corresponding to the propelling wheels and supporting the propelling wheels, respectively, a pair of right and left HSTs coupled to the transmission cases for outputting power thereto, respectively, a center case housing a power distributor for transmitting power from the engine to the pair of right and left HSTs, and a mower unit disposed forwardly of the propelling wheels. The center case is disposed forwardly of the axles of the propelling wheels.