Space Exploration Technologies Corp., doing business as SpaceX, is an American spacecraft manufacturer, launch service provider and satellite communications company founded in 2002 by Elon Musk and headquartered in Hawthorne, California. It develops the reusable Falcon 9 and Falcon Heavy rockets and the Starship system, operates the Dragon spacecraft for crew and cargo missions, and runs Starlink, the world largest satellite broadband constellation.

SpaceX is a privately held company; its market value reflects the most recent private funding rounds and secondary share sales rather than a public listing.