The 73rd Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 73rd Indiana Infantry was organized and mustered in at Camp Rose, South Bend, Indiana for a three-year enlistment on August 16, 1862, under the command of Colonel Gilbert Hathaway.
The regiment was attached to: The 73rd Indiana Infantry mustered out of service on July 1, 1865.
The regiment lost a total of 241 men during service; 3 officers and 41 enlisted men killed or mortally wounded, 191 enlisted men died of disease.