An oil-pump drive for an internal-combustion engine, in particular for a motorcycle. The drive includes an oil pump, in the housing of which is arranged at least one rotor member for supplying a volumetric flow of oil, wherein the rotor is driven via the crankshaft of the internal-combustion engine. It is proposed that the rotor of the oil pump is connected to a shaft driven directly by the crankshaft. In this way, the oil pump is directly driven in a simple manner.