Patrick Gass, American sergeant (Lewis and Clark Expedition) and author (d. 1870)

Patrick Gass (June 12, 1771 – April 2, 1870) served as sergeant in the Lewis and Clark Expedition (1804–1806). He was important to the expedition because of his service as a carpenter, and he published the first journal of the expedition in 1807, seven years before the first publication based on Lewis and Clark's journals.