Orion (disambiguation)

Orion may refer to the following:
 * Orion - A Halo 5: Guardians Forge map.
 * Orion Arm - A spiral arm in the Milky Way galaxy.
 *  - A carrier of the UNSC Navy.
 *  - The lead ship of the Orion class.
 * Orion complex - A nebular complex in the Milky Way, home to the Forerunner inner worlds.
 * ORION Project - A UNSC supersoldier project, also known as the "SPARTAN-I program".
 * ORION candidate 047 - A candidate of the ORION Project.