Trion

Trion may refer to:
 * Trion, Georgia, a town in Chattooga County, Georgia, United States
 * Trion (neural networks), a localized group of neurons in the cortex and a basic unit in the trion model
 * Trion (physics), a quasiparticle in a solid
 * Trion Worlds, a video game developer and publisher
 * Trion Supercars, an American car manufacturer

In fiction

 * Alpha Trion, the name of several fictional characters in the various Transformers universes