SS21 or variation, may refer to:

  • OTR-21 Tochka, a Soviet short-range ballistic missile with the NATO designation "SS-21 Scarab"
  • , a United States Navy submarine which served during World War I
  • , several submarines of the navy of Chile
  • Higashi-Murayama Station (station code <code>SS21</code>), Higashimurayama, Tokyo, Japan; a train station
  • SS21, a district of Damansara Utama, Petaling Jaya, Selangor, Malaysia
  • SS21 The Healing, a LOVERBOY fashion label fashion collection by Charles Jeffrey (fashion designer)
  • 21st Waffen Mountain Division of the SS Skanderbeg (21st SS division; S.S. 21) of Albanian partisans serving Germany in WWII

See also

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  • SS-N-21 "Sampson", a Soviet submarine launched ballistic missile