An adjustable cheek rest for a rifle is formed with a top member, a lower member, a cushion pad and a plurality of accessories. This cheek rest is adjustably and removably affixed to a stock of the rifle. Both the top member and the lower member are in symmetrical shape and are made of moldable plastic materials including the thermoplastic acrylic-polyvinyl chloride material. The top member and the lower member are foldable to fit the longitudinal cross sectional profile of the stick of rifle. There are top fastener holes located on the top member and their corresponding lower fastener holes located on the low member, which are adjustably fastened by fastener. Straps go through strap cuts in the lower member, so as to removably affix the cheek rest to the stock of the rifle.