A fishing reel drive gear is used for a fishing reel. The fishing reel drive gear is arranged to be meshed with a pinion gear. The fishing reel drive gear includes a gear tooth portion and a disc portion. The gear tooth portion has first and second gear teeth. The first gear tooth includes a first tooth surface. The second gear tooth includes a second tooth surface. The first tooth surface includes a first groove thereon. The second tooth surface includes a second groove thereon. The first and second grooves intersect with a mesh directional. The disc portion has an outer peripheral surface and a radially outer portion of a lateral face. The gear tooth portion is configured on the outer peripheral surface or the radially outer portion. The fishing reel drive gear is arranged to be meshed with the pinion gear in a direction of the mesh directional path