The Kincardine and Deeside by-election was a parliamentary election held in Kincardine and Deeside, Scotland, on 7 November 1991, caused by the death of its Conservative Member of Parliament (MP), Alick Buchanan-Smith on 29 August 1991.
The result was a Liberal Democrat gain from the Conservatives, with Nicol Stephen elected as the new MP. Stephen held the seat until the 1992 general election when it was regained by the Conservatives. The Labour candidate, Malcolm Savidge, who came fourth in this by-election, went on to be elected MP for Aberdeen North in the 1997 general election. Nicol Stephen was elected Member of the Scottish Parliament for Aberdeen South in 1999 and became Leader of the Scottish Liberal Democrats in 2005.
The results of the by-election were: