Psion or Psions may refer to: Fiction Psion (comics), an alien race in stories from DC Comics Literature Psion, a fictitious "unit of mental energy" in the 1951 novella The Greatest Invention by Jack Williamson Psion, a person with psionic abilities Psion, a 1982 novel by Joan D. Vinge Psion (想子), a fictional substanceless particle and psychic phenomenon, the basis of magic in The Irregular at Magic High School Rhon psion (or Ruby psion), a group of telepaths in the Saga of the Skolian Empire novels Video gaming Psion (role-playing games) a character with in role-playing games Psion (Dungeons & Dragons), a character class in Dungeons & Dragons Psions (Freedom City), a fictional adversary group in Freedom City Psions, a fictional group in the game Adventure! Psion, an alien species with extraordinary powers assimilated by the Cabal Empire in the video games Destiny and Destiny 2 Psion, a species of enemy in the video game Into the Breach Science Psion, the J/ψ meson (discovered 1974) Computing Psion (company), a manufacturer of handheld computer devices Psion Organiser Psion Series 3 Psion Siena Psion Series 5 Psion Revo Psion netBook Psion Series 7 See also Psi (disambiguation) Psyche (disambiguation) Psychic (disambiguation) Psychotronics (disambiguation)