64th is the ordinal form of the number 64. 64th or Sixty-fourth may also refer to:

A fraction, , equal to one of 64 equal parts Sixty-fourth note, in music

Geography 64th meridian east, a line of longitude 64th meridian west, a line of longitude 64th parallel north, a circle of latitude 64th parallel south, a circle of latitude 64th Street

Military 64th Group Army, military formation of China's People's Liberation Army 64th Army (Soviet Union) 64th Division (disambiguation) 64th Regiment (disambiguation) 64th Squadron (disambiguation)

Other 64th century 64th century BC

See also 64 (disambiguation)