Arcadia
Arcadia may refer to:
- Arcadia (Clan System), the Pentagon Worlds planetary system
- Arcadia (continent), one of Tsamma IV's three continents
- Arcadia (DropShip class), the first Clan-developed ProtoMech transport
- Arcadia (FS), the Federated Suns planetary system
- Arcadia (LC), the Lyran Commonwealth planetary system
- Arcadia (short story), a multipart BattleCorps short story written by Jason Schmetzer
- Battle of Arcadia (3063), a conflict between the Free Worlds League and Lyran Alliance