Osen may refer to:
People Erwin Dom Osen (1891–1970), Austrian mime artist Otto Osen (1882–1950), Norwegian long-distance runner
Places Bulgaria
Osen, Silistra Province, a village in the Glavinitsa municipality, Silistra Province Osen, Targovishte Province, a village in the Targovishte municipality, Targovishte Province Osen, Vratsa Province, a village in the Krivodol municipality, Vratsa Province
Netherlands Osen, Netherlands, a village in the province of Limburg
Norway Osen Municipality, a municipality in Trøndelag county Osen (village), a village within Osen Municipality in Trøndelag county Osen Church, a church in Osen Municipality in Trøndelag county Nordre Osen, a village in Åmot Municipality in Innlandet
Russia Osen (river), a tributary of the Mologa
Other OSEN (newspaper), a South Korean online newspaper
See also Osan, a city in Gyeonggi Province in South Korea