Abstract: A cover for a lacrosse helmet made from four elastic fabric panels is disclosed that closely conforms to the shape of a lacrosse helmet and includes a center panel that is cut into the shape of a polygon and has a front side a rear side and two lateral sides, a pair of lateral panels and a rear panel that is cut into the shape of a segment of a circle that includes a straight side and an arcuate side. The rear side of the center panel is attacked to the middle of the arcuate side of the rear panel. The lateral panels are shaped to cover the portion of the helmet that is opposite the ears and include straps that fasten to a chin guard of a conventional lacrosse helmet. The straight side of the rear panel and a front side of the central panel are gathered together and sewn to allow these sections to stretch. The helmet cover further includes openings in the rear panel to allow access to snap-on posts provided on the helmet.