Sean O'Callaghan
- 직업
- 배우
- 출생
- 1954년 1월 26일
- 출생지
- Tralee, County Kerry, Ireland
- 사망
- 2017년 8월 23일
약력
Sean O'Callaghan was a member of the Provisional Irish Republican Army, who from the late 1970s to the mid-1980s worked against the organisation from within as a mole for the Irish Government with the Garda Síochána's Special Branch.