Copenhagen is a play by Michael Frayn, based on an event that occurred in Copenhagen in 1941, a meeting between the physicists Niels Bohr and Werner Heisenberg, who had been Bohr's student. It premiered in London in 1998, at the National Theatre, running for more than 300 performances, starring David Burke, Sara Kestelman, and Matthew Marsh.

Michael Frayn, FRSL is an English playwright and novelist. He is best known as the author of the farce Noises Off  and the dramas Copenhagen and Democracy.