Malaspina Glacier, Piedmont glacier in Wrangell-St. Elias National Park, Alaska.

Malaspina Glacier is a piedmont glacier in Wrangell-St. Elias National Park that formed from the merger of several large ice streams flowing together across the landscape. Its surface displays distinctive patterns of moraines created where the Seward, Agassiz, and Marvine/Hayden glaciers meet.

The glacier was named after Alessandro Malaspina, a Tuscan explorer serving Spain's navy, who surveyed the region in 1791. His expedition brought attention to this ice field and gave it a name recognized across the world.

The Tlingit name Sít' Tlein translates as "big glacier." The colonial name honours Alessandro Malaspina, a Tuscan explorer in Spanish naval service who visited the region in 1791; in 1874 W. H. Dall of the United States Coast Survey called it "Malaspina Plateau," not realising its true geological character.

This location is best explored by air or through professional guided expeditions, as it lies in a remote national park with no direct road access to the glacier. Visitors should prepare for harsh weather and limited summer visiting windows, as climate conditions severely restrict when access is possible.

The glacier is officially classified as three separate glaciers — Seward, Agassiz and Marvine/Hayden — so a feature named Malaspina Glacier does not technically exist. Radar data and aerial photographs going back to 1972 show the system thinned about 20 m between 1980 and 2000, enough to contribute 0.5% of global sea-level rise.