Seán Keegan (2 February 1930 – 9 July 2007) was an Irish Fianna Fáil politician.
A farmer from Kilbeggan, County Westmeath, his father had been active in the Irish War of Independence.
He contested his first general election in 1965 at the behest of Seán Lemass.
Keegan was elected to the 12th Seanad on 16 June 1970 at a by-election to the Administrative Panel.
He was re-elected to the Seanad in 1973, having been an unsuccessful candidate at the 1973 general election.