Steven O'Brien

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), Tipperary Gaelic football and hurling player
Steven O'Brien (Cork Gaelic footballer), Irish Gaelic footballer
Stephen O'Brien, British politician and diplomat
Stephen J. O'Brien, American geneticist
Stephen O'Brien (musician), member of HAL, an Irish band
Stephen O'Brien (Kerry Gaelic footballer), Irish sportsperson