46th is the ordinal form of the number 46. 46th or Forty-sixth may also refer to:
- A fraction, 1⁄46, equal to one of 46 equal parts
Geography
- 46th meridian east, a line of longitude
- 46th meridian west, a line of longitude
- 46th parallel north, a circle of latitude
- 46th parallel south, a circle of latitude
- 46th Street (disambiguation)
Military
- 46th Army
- 46th Brigade (disambiguation)
- 46th Division (disambiguation)
- 46th Regiment (disambiguation)
- 46th Squadron (disambiguation)