Grover Salman Wormer (August 9, 1821 – January 26, 1904) was an American Union brevet brigadier general during the period of the American Civil War. He served with the Eighth Michigan Cavalry. After the war, he wrote about the Morgan's Raid and owned a machinery business in Detroit. He received his appointment as brevet brigadier general dated to March 13, 1865. His father was a soldier from Massachusetts who fought in the War of 1812.