The Puyallup Glacier is a glacier on the west flank of Mount Rainier in Washington. It covers and contains 10.2 billion ft<sup>3</sup> (289 million m<sup>3</sup>) of ice. Sharing the same source of ice as the northern South Mowich Glacier, the Puyallup Glacier begins as a branch off the ice stream that flow out of the Sunset Amphitheater. From the split at around , the glacier expands into a broad sheet of ice ranging from to in elevation. Leaving the large expanse of ice, the glacier flows down a small valley, it narrows significantly as it turns northwestward. From there on, the glacier is dirty and ends on steep, uneven terrain at about . The glacier gives rise to the Puyallup River.