In BattleTech, Cygnus may refer to:

  • Cygnus (BattleMech), the 95-ton BattleMech
  • Cygnus (system), the planetary system (with no established connection to the real-world Cygnus constellation or its associated systems, see below)

In the real world, Cygnus is also Latin for "swan," and in astronomical terms generally refers to the nonfictional astronomical constellation known as Swan. Several stars and astronomical features relating to this constellation have been mentioned in BattleTech canon, though it should be noted that their location, distance from earth or even nature does not always correspond with their nonfictional namesakes: