Conscience; or, The Bridal Night is an 1821 tragedy by the Irish writer James Haynes.

It premiered at the Theatre Royal, Drury Lane in London on 21 February 1821.

[1] The original cast included Sarah West as Elmira, John Powell as Duke of Venice, John Cooper as Arsenio, James William Wallack as Lorenzo.

[2] It then appeared at the Anthony Street Theatre in New York in May 1821.

John Genest considered the play's language better than its plot.