Grindstone Lake (disambiguation)

Grindstone Lake may refer to:
 * Grindstone Lake in Montezuma County, Colorado
 * Grindstone Lake in Pine County, Minnesota
 * Grindstone Lake in Sawyer County, Wisconsin
 * Grindstone Pond, a small lake in Franklin County, Maine
 * Grindstone Pond, a small lake in Piscataquis County, Maine
 * Grindstone Reservoir in Crook County, Oregon
 * Grindstone Tank, a small lake in Coconino County, Arizona
 * Grindstone Tank, a small lake in Yavapai County, Arizona
 * Grindstone Tank, a small lake in La Salle County, Texas