Steven, Stephen, or Steve O'Brien may refer to:
- Steven O'Brien (pilot), Minnesota Air National Guard pilot who witnessed the 9/11 attack flights
- Steven O'Brien (dual player) (born 1994), Tipperary Gaelic football and hurling player
- Steven O'Brien (Cork Gaelic footballer) (born 1969), Irish Gaelic footballer
- Stephen O'Brien (born 1957), British politician and diplomat
- Stephen J. O'Brien (born 1944), American geneticist
- Stephen O'Brien (musician), member of HAL, an Irish band
- Stephen O'Brien (Kerry Gaelic footballer) (born 1991), Irish sportsperson
This disambiguation page lists articles about people with the same name.
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