Seth Warner (May 17, 1743 [O.S. May 6, 1743] – December 26, 1784) is a Revolutionary War officer from Vermont who rises to the rank of Continental colonel and is often given the duties of a brigade commander.

He is best known for his leadership in the capture of Fort Crown Point, the Battle of Longueuil, the siege of Quebec, the retreat from Canada, and the battles of Hubbardton and Bennington.

Before the war, he was a captain in the Green Mountain Boys. He was outlawed by New York but never captured.

In the final years of the war, he remains loyal to the United States while the independent state of Vermont negotiated separately with the British.