Ayr Burghs by election, 1888

The Ayr Burghs by-election, 1888 was a parliamentary by-election held for the British House of Commons constituency of Ayr Burghs on 15 June 1888. The seat had become vacant when the sitting Liberal Unionist Member of Parliament Richard Frederick Fotheringham Campbell died.

The Liberal candidate, John Sinclair, won the seat in a straight fight with his Liberal Unionist opponent, the Hon Evelyn Ashley.