Fort Putnam was a military garrison during the Revolutionary War at West Point, New York, United States.

Built by a regiment of Colonel Rufus Putnam's 5th Massachusetts Regiment, it was completed in 1778 with the purpose of supporting Fort Clinton,[1] which sat on the edge of the Hudson River about 3/4 of a mile away.

[2][3] The fort was rebuilt and enlarged in 1794 before falling into disuse and disrepair as the military garrison at West Point became obsolete in the early mid-19th century.

Sitting at an elevation of 500 feet, it was West Point's largest garrison during the Revolutionary War.

Tadeusz Kościuszko convinced them of the necessity of defending Crown Hill, and drafted blueprints accordingly.