Gaian

Gaian may refer to:

Nonfiction

 * An adherent of Gaianism
 * A person who adopts technogaianism, a slant on Gaianism that embraces a symbiosis between the emergence of modern technology and ancient terrestrial evolutionary biology
 * A follower of Gaia philosophy
 * A shortened form of the Roman name Gaianus

Fiction

 * Gaian (demonym), a demonym commonly associated in science fiction with humans
 * A faction the player can choose to control in the computer game Sid Meier's Alpha Centauri
 * A user of the popular forum Gaia Online or the Avatar character used to represent the user
 * The House of Gaian, from the Tir Alainn Trilogy by Anne Bishop