Abstract: A beverage container holder to be removably attached to an armrest of a chair includes an arm member and a receptacle on one end of the arm member to receive and support a beverage container in a stable manner. A flexible, generally U-shaped retainer is on the opposite end of the arm member and is configured to engage the armrest to secure the beverage container holder to the armrest. The receptacle includes a base, at least one upright wall extending generally about the periphery of the base and a slot provided in the upright wall. The slot extends downwardly from an upper rim of the upright wall to the base and also extends partially across the base.