73rd

73rd may refer to:


 * 73rd (Perthshire) Regiment of Foot also known as MacLeod's Highlanders after its founder John Mackenzie, Lord MacLeod
 * 73rd Academy Awards honored the best films of 2000 and was held on March 25, 2001
 * 73rd Carnatic Infantry, an infantry regiment of the British Indian Army
 * 73rd Cavalry Regiment (United States), a Cavalry Regiment in the U.S. Army first formed in 1941
 * 73rd Delaware General Assembly, a meeting of the legislative branch of the state government
 * 73rd Field Artillery (United States), a Field Artillery regiment of the United States Army
 * 73rd Grey Cup, the 1985 Canadian Football League championship game at Olympic Stadium, Montreal
 * 73rd Illinois Volunteer Infantry Regiment, an infantry regiment that served in the Union Army during the American Civil War
 * 73rd Infantry Division (Germany), a German military unit which served during World War II
 * 73rd Infantry Regiment (France), a French infantry regiment
 * 73rd meridian east, a line of longitude 73° east of Greenwich
 * 73rd meridian west, a line of longitude 73° west of Greenwich
 * 73rd New York Volunteer Infantry Regiment, an infantry regiment of Union Army in the American Civil War
 * 73rd Ohio Infantry, an infantry regiment in the Union Army during the American Civil War
 * 73rd Oregon Legislative Assembly, the Oregon Legislative Assembly (OLA)'s period from 2005 to 2006
 * 73rd parallel north, a circle of latitude that is 73° north of the Earth's equatorial plane, in the Arctic
 * 73rd parallel south, a circle of latitude that is 73° south of the Earth's equatorial plane, in the Antarctic
 * 73rd Regiment Indiana Infantry, an infantry regiment that served in the Union Army during the American Civil War
 * 73rd Regiment of Foot (Invalids), an infantry regiment of the British Army from 1762 to 1768
 * 73rd United States Congress, a meeting of the legislative branch of the United States federal government
 * California's 73rd State Assembly district, one of 80 districts in the California State Assembly