Henry Glen (July 13, 1739 – January 6, 1814) was a merchant, military officer and politician who served as a Federalist in the United States House of Representatives during the years immediately following the adoption of the United States Constitution.

[2] His sister, Janet (Jannetje), was the wife of Abraham Cuyler, who was the Mayor of Albany from 1770 until 1776 when he was banished for Tory leanings and settled in Canada.

Glen became a merchant and was successful in the Indian Trade and land speculation, operating a company in partnership with his brother Johannes and Jacobus Teller.

[13] At the start of the American Revolution, Glen was appointed commander of the 2nd Company of Schenectady Militia, with the rank of captain.

[16][17] Glen was later appointed a Continental Army Assistant Deputy Quartermaster General with the rank of major.

[19] Quartermasters were responsible for procuring food, horses, wagons, weapons, ammunition, uniforms, tents and other materiel and arranging for them to be distributed to the Infantry, Cavalry and Artillery units.

[20] During the Revolution, Glen also served as one of New York's three Commissioners of Indian Affairs, and was one of the commission's executive agents.