Psion or Psions may refer to:

Fiction Psion (comics), a DC Comics extraterrestrial species

Gaming Psion (role-playing games) a character class in role-playing games Psion (Dungeons & Dragons), a character class in Dungeons & Dragons Psions (Freedom City), a supervillain team in the campaign setting Freedom City Psions, a fictional species with psychic abilities in the role-playing game Trinity Psions, a fictional extraterrestrial species with psychic abilities in the video game series Destiny Psions, a group of antagonists in the video game Into the Breach

Literature Psion, a fictitious "unit of mental energy" in the novella The Greatest Invention by Jack Williamson Psion, a person with psionic abilities Psion, a 1982 novel by Joan D. Vinge Rhon psions, a fictional group of empaths and telepaths in the novel series Saga of the Skolian Empire Psion (想子), a fictional non-physical particle and psychic phenomenon, the essence of magic in the web novel series The Irregular at Magic High School

Science and technology Psion, the J/psi meson subatomic particle Psion (company), a British mobile computer company

See also Psi (disambiguation) Psyche (disambiguation) Psychic (disambiguation) Psychotronics (disambiguation)