A cup holder for holding a beverage container includes a case having a first floor member in a receiving chamber, and a sidewall; a second floor member with a base end side rotatably supported by the sidewall inside the case, and a free end rotatable between a first position where the free end is positioned on a lateral side of a rotary shaft, and a second position where the free end is positioned below the rotary shaft; and an urging device urging the second floor member toward the first position. The second floor member rotates toward the second position when the second floor member receives a load larger than a predetermined load from above at the first position, and holds the beverage container together with the first floor member at a third position where the second floor member is rotated to a second position side more than the first position.