A cup holder that can prevent malfunction and generation of abnormal noise due to adhesion of liquid or other foreign matter is provided. The cup holder (1) includes a holder main body (2) for accommodating a container therein, and arms (3) each including an upper arm piece (10), a lower arm piece (11), and a hinge joint (12) connecting a lower end of the upper arm piece (10) to an upper end of the lower arm piece (11). The arm is an integrally molded product made of a resin material, and the hinge joint (12) is a thin-walled hinge formed by a thin-walled portion thereof.