420th may refer to:
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420th Air Base Group or RAF Fairford (IATA: FFD, ICAO: EGVA), Royal Air Force (RAF) station in Gloucestershire, England
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420th Air Refueling Squadron, inactive United States Air Force unit
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420th Bombardment Squadron, inactive United States Air Force unit
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420th Engineer Brigade (United States), combat engineer brigade of the United States Army based in Bryan, Texas
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420th Flight Test Flight, United States Air Force Reserve squadron based at Phoenix-Mesa Gateway Airport Arizona
See also
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420 (number)
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420 (disambiguation)
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AD 420
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Year 420 (Roman numerals, CDXX) was a leap year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Theodosius II, Theodosius and Constantius III, Constantius (or, less frequently, ...
, the year 420 (CDXX) of the Julian calendar
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420 BC
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