121st

121st may refer to: 121st Air Refueling Wing, an aerial refueling organization assigned to the Ohio Air National Guard 121st Battalion (disambiguation), several military units 121st Squadron (disambiguation), several military units 121st Division (disambiguation), several military units 121st IOC Session, held in Denmark in 2009, where the host city of the 2016 Summer Olympics was selected 121st meridian east, 121° east of Greenwich, a line of longitude through Asia, the Indian Ocean and Australia 121st meridian west, 121° west of Greenwich, a line of longitude through North America and the Pacific Ocean 121st Regiment (disambiguation), several military units 121st Street (disambiguation), several locations 121st Weather Flight, a subordinate unit of the 113th Wing of the United States Air Force