Battle of Installation 00 may refer to:
- Battle of Installation 00 – The final major battle of the Human-Covenant War
- Attack on Installation 00 – The attack on the UNSC research outposts on the Ark by the Banished
- Battle of Installation 00 (2559) – The post-War battle on the Ark between the UNSC forces of the Spirit of Fire and the Banished
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