Sean Nial Farren (born 6 September 1939) is an Irish Social Democratic and Labour Party (SDLP) politician and academic who was a Member of the Northern Ireland Assembly (MLA) for North Antrim from 1998 to 2007.
He worked as a teacher in Dublin, Switzerland and Sierra Leone before becoming a lecturer at the University of Ulster.
He is currently a member of the Governing Authority of Dublin City University, a Trustee of Concern Worldwide (UK), a member of the Standing Committee of the Development Studies Association of Ireland (DSAI) and a committee member of the Sierra Leone Ireland Partnership (SLIP).
Farren contested the Westminster seat of North Antrim as a member of the Social Democratic and Labour Party (SDLP) at the 1979 general election, and stood at each subsequent general election until 2005.
In 1982, Farren was elected to the Northern Ireland Assembly in North Antrim.