Abstract: An expandable ice chest including a base member having a first pair of opposing walls, a second pair of opposing walls, and a bottom surface. The first and second pairs of opposing walls are attached to the bottom surface to form a box-like receptacle having an open upper end. An adjustable inner liner has a first pair of opposing liner walls and a second pair of opposing liner walls. The first pair of opposing liner walls are connected to the second pair of opposing liner walls. The adjustable inner liner has an open lower end and is slidably engaged within the base member. A lid member is received on the adjustable inner liner. A seal is positioned between the inner liner and the base member. The inner liner is adjustably secured to the base member in a plurality of positions via a slot through the base member and a pocket in the inner liner. A plug is received in the pocket and the slot to secure the relative position of the inner liner to the base member.