63rd is the ordinal form of the number 63. 63rd or Sixty-third may also refer to:
A fraction, , equal to one of 63 equal parts
Geography 63rd meridian east, a line of longitude 63rd meridian west, a line of longitude 63rd parallel north, a circle of latitude 63rd parallel south, a circle of latitude 63rd Street (disambiguation)
Metro stations Ashland/63rd (CTA station), on the Green Line East 63rd-Cottage Grove (CTA), on the Green Line 63rd (CTA Red Line), on the Red Line 63rd Street station (SEPTA Market–Frankford Line) on the Market-Frankford Line in West Philadelphia
Railroad stations 63rd Street (Metra station) an electric commuter railroad shared by the Metra Electric service and South Shore Line (NICTD) in Chicago
Trolley stops 63rd and Malvern Loop (SEPTA station) a terminus of one of the SEPTA Subway–Surface Trolley Lines in Northwest Philadelphia 63rd Street station (SEPTA Route 15), a SEPTA Route 15 trolley stop in Carrol Park, Philadelphia
Metro lines 63rd Street Line of the New York City Subway, two lines served by multiple services
Military 63rd Army (Soviet Union) 63rd Division (disambiguation) 63rd Regiment (disambiguation)
Other 63rd century 63rd century BC
See also 63 (disambiguation)