Eldorado Glacier is on the south slopes of Eldorado Peak, North Cascades National Park, in the U.S. state of Washington. The glacier is approximately in length, in width at its terminus and descends from . Eldorado Glacier is connected to Inspiration Glacier on its upper slopes. Glacial melt waters from Eldorado Glacier flow south over Roush Creek Falls, which at , is one of the tallest waterfalls in Washington.