413th may refer to:
*
413th Fighter-Interceptor Squadron, inactive United States Air Force unit
*
413th Flight Test Group, United States Air Force Air Force Reserve Command unit
*
413th Flight Test Squadron (413 FLTS), part of the 46th Test Wing, based at Hurlburt Field, Florida
See also
*
413 (number)
*
413, the year 413 (CDXIII) of the Julian calendar
*
413 BC
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