Altair IV
- Primary: Altair
- Class M
- Colony not yet established by 2155 (ENT Novel: Kobayashi Maru)
- Inhabited by 2271 (TOS Novel: Excelsior: Forged in Fire; Star Trek III: The Search for Spock)
- Nation
- - 2271 - 2285 - : Altair Colony
- Harsher world than Altair VI (ENT Novel: Kobayashi Maru)