522nd or 522d may refer to:

• 522d Special Operations Squadron (522 SOS), the Fireballs, a unit of the United States Air Force

• 522 (number)
• 522, the year 522 (DXXII) of the Julian calendar
• 522 BC

Topics referred to by the same term

This disambiguation page lists articles about military units and formations which are associated with the same title.
If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.