Halcyon may refer to:
- Halcyon, a Colonies planet;
- Halcyon usurpers, a group of rebels against the Galactic Republic;
- Mission to Halcyon, a mission underwent by the Judicial Forces.
- Halcyon, a starship booster;
- "Halcyon Endures," a Jedi passphrase;
- The Halcyon family, a family of Corellians;
- Halcyon Street, a road on Corellia;
- Keiran Halcyon, a Jedi Knight;
- Nejaa Halcyon, a Jedi Master.
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