Psion
- Destiny (video game series)
- Into the Breach
- J/psi meson
- Jack Williamson
- Joan D. Vinge
- Psi (disambiguation)
- Psion (comics)
- Psion (company)
- Psion MC
- Psion Organiser
- Psion Revo
- Psion Series 3
- Psion Series 5
- Psion Series 7
- Psion Siena
- Psion netBook
- Psionics
- Psionics (role-playing games)
- Psions (Freedom City)
- Psyche (disambiguation)
- Psychic (disambiguation)
- Psychotronics (disambiguation)
- Rhon psion
- The Irregular at Magic High School
- Trinity (role-playing game)