Mr Emmet Takes a Walk is a chamber opera by the English composer Sir Peter Maxwell Davies with a libretto by David Pountney.

It tells the story of the last seconds of the life of Mr Emmet before his suicide on a railway line.

Thoughts, ideas, musical fragments and experiences flash through Mr Emmet's mind before his death which expand across the fifty-minute duration of the work.

Davies has cited the works of four composers as motifs in the opera: The work premiered in a co-production of Muziektheater Transparant and the Psappha ensemble at the St. Magnus Festival, Orkney on 16 June 2000.

Although Davies intimated that Mr Emmet Takes a Walk would be his last piece of musical theatre, just over a decade later he completed the a further opera, Kommilitonen!.