The present invention relates to a grain buggy assembly. The grain buggy assembly includes a grain buggy and a conveyor for movably mounting to the buggy. In use, the conveyor can be moved from a retracted configuration in which the conveyor is retracted relative to the buggy to a grain loading configuration. In the grain loading configuration, the conveyor can extend from the buggy to receive grain for conveyance to the buggy. In one embodiment, the conveyor is pivotally mounted to the grain buggy.