Peter Matthiessen (22 Mey 1927 – 5 Aprile 2014) wis an American novelist, naturalist, an wilderness writer. He wis kent for his beuks The Snow Leopard an In the Spirit of Crazy Horse.

Matthiessen deit on 5 Aprile 2014 frae leukemia in Sagaponack, New York, agit 86.^[1]