Henry Irwin Weed (February 10, 1861 – May 25, 1945) was an American lawyer, military officer, and politician.
Born in Livingston County, New York, his father was killed in the Battle of the Wilderness during the American Civil War.
In 1896, Weed ran for the office of Wisconsin Attorney General on the Democratic Party ticket and lost the election.
Weed served on the military staff of Wisconsin Governor George Wilbur Peck and was commissioned a lieutenant colonel.
During World War I, Weed served on the judge's advocate staff.