Cygnus could refer to:

• Locations:
  • Cygnus constellation
    • 16 Cygni, a binary star
    • 61 Cygni, a.k.a the Tellar system
      • 61 Cygni I, Tellar I, first planet in the system
      • 61 Cygni III, Tellar III, a gas giant
    • Alpha Cygni, a.k.a. 50 Cygni, Deneb
    • Beta Cygni, a.k.a. Cygnia Minor, Albireo
    • Cygnus system
      • Cygnian Institute For Advanced Cybernetics
      • Cygnus III, third planet in the system
      • Cygnus IV, homeworld of Megasoids
      • Cygnus VII, a moon
    • Delta Cygni, a Federation system
      • Delta Cygnus, a Federation planet
    • Epsilon Cygni, a trinary star near the Ferengi Alliance
    • Gamma Cygnet, a stellar region
      • Gamma Cygnet planetoid, a world whose life was devoured by space beings
      • Gamma Cygni, a.k.a. 37 Cygni, Sadr
    • Omega Cygni, a.k.a. Cygnet
      • Cygnus (planet), a.k.a. Cygnet XIV
    • Theta Cygni, a trinary system
      • Theta Cygni XII, a planet infested by blastoneurons
    • Ylva Cygni, a star system
• Starships and vehicles:
  • Cygnus class, a sub-type of the Hermes-class
    • USS Cygnus (NCC-617), a 23rd century Cygnus-class scout
  • Cygnus class (battlecruiser), a Federation battlecruiser class
    • USS Cygnus (NCC-92190), a Cygnus-class prototype
    • ISS Cygnus, a Terran Empire starship
  • RIS Cygnus (Snipe-class), a Romulan frigate
  • RIS Cygnus (Shrike-class), a Romulan light cruiser