William Wirt Henry (November 21, 1831 – August 31, 1915) was a manufacturer and a colonel in the Union Army during the American Civil War.

He was a recipient of the brevet grade of brigadier general of volunteers and the Medal of Honor for gallantry in action.

[3] He rejoined his father's business and returned to the Washington area, selling drugs to sutlers and military surgeons.

[12] Due to his wounds and other medical reasons, he resigned his commission on December 17, 1864 and was mustered out of the volunteer service.

[17] On December 21, 1892, he received the Medal of Honor for his actions at Cedar Creek, "though suffering from severe wounds, rejoined his regiment and led it in a brilliant charge, recapturing the guns of an abandoned battery."

After he returned from war, Henry rejoined the family business which included, over the years, manufacturing and wholesaling of drugs, first in Waterbury, and then in Burlington, Vermont.

[20][21] Citation: Though suffering from severe wounds, rejoined his regiment and let it in a brilliant charge, recapturing the guns of an abandoned battery.