Armstrong could refer to:

• Starships and vehicles:
  • USS Armstrong (cutter)
  • USS Armstrong (NCC-19212, Oberth-class)
  • USS Armstrong (NCC-57537, Challenger-class)
  • USS Armstrong (Defiant-class)
  • USS Armstrong (Intrepid-class)
  • USS Armstrong (alternate reality)
  • Armstrong (USS Enterprise), a shuttlecraft attached to the USS Enterprise in 2267
  • Armstrong (2379), a shuttlecraft attached to the USS Titan in 2379
• People:
  • Armstrong (Ensign) - officer aboard the USS Potemkin
  • Armstrong T.J. Talbot-Maxwell
  • George Armstrong Custer
  • Neil Armstrong
  • Louis Armstrong
  • James Armstrong
  • Ran Armstrong
• Locations:
  • Armstrong City
  • Lake Armstrong
• Real-life topics:
  • Vaughn Armstrong