Iconian
- Appearance: Incredibly tall, over 2.5m (DS9 Short Story: "Horn and Ivory")
- Major people or civilization based near present-day Romulan space (TNG: "Contagion")
- Creators of the Iconian gateways
- Collapsed c.200,000 ya following uprising or attack by neighboring civilizations (TNG: "Contagion"; DS9: "To the Death")