ODST may refer to the following:
- Orbital Drop Shock Trooper - An elite group of UNSC Marines under the supervision of NAVSPECWAR.
- ODST Ballistic Battle Armor - The vacuum-sealed armor worn by the ODSTs.
- Halo 3: ODST - A video game by Bungie that serves as a prequel to Halo 3.
- We Are ODST - A live-action short about the ODSTs.
- ODST (achievement) - An achievement in Halo 4.
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