Oyen or Øyen may refer to:
People
- Arild Retvedt Øyen (born 1946), Norwegian veterinarian and diplomat
- Else Øyen, Norwegian sociologist
- Knud Iversen Øyen (1865–1942), Norwegian jurist and politician
- Kristen Øyen (born 1938), Norwegian forester
- Jarmund Øyen (born 1944), Norwegian politician
- Odd Øyen (1914–1997), Norwegian WW2 resistance member
- Ørjar Øyen (born 1927), Norwegian sociologist
- Sofie Oyen (born 1992), Belgian tennis player
- Tera de Marez Oyens (1932–1996), Dutch composer
Places
- Oyen, town in Alberta, Canada
- Saint-Oyen (disambiguation)
- Saint-Oyen, Savoie, in France
- Saint-Oyen, Aosta Valley, in Italy
- Saint-Oyens, in Switzerland