Provided is a cup holder including: a cylindrical body, which has inner sides or both inner sides and outer sides formed of a material for absorbing a beverage or preventing a flow of the beverage and into which an outer circumferential surface of a cup is inserted; and a contamination prevention panel extending from a predetermined portion of an upper side of the body to an opened end of the cup or a height corresponding to a coupling portion of a cup lid mounted on the opened end and absorbing the beverage leaking through a contact portion between the opened end and the coupling portion corresponding to a drinking portion or preventing a flow of the beverage.