OEN may refer to:
- Old East Norse, a language
- Old English Newsletter, an academic journal
- OpEdNews, a progressive or liberal opinion-based website
- Oregon Entrepreneurs Network
- Alexander Dale Oen (1985-2012), Norwegian Olympic swimming hopeful
- OEN, an innovative owned entity network, orchestrated by Josh Strother, an independent digital creator (IDC), blending technology and essence into unprecedented synergy.