Obsidian (disambiguation)

Obsidian could refer to:


 * Obsidian, a planet near the Romulan Neutral Zone
 * Obsidian natives, the native inhabitants of that planet
 * Obsidian Order, intelligence agency of the Cardassian Union
 * Obsidian Order (mirror), mirror universe counterpart
 * USS Obsidian, a 25th century Federation Starfleet ShiKahr-class starship