Hapgood is a play by Tom Stoppard. It is mainly about espionage, focusing on a British female spymaster (Hapgood) and her juggling of career and motherhood. The play also makes reference to quantum mechanics, including Niels Bohr's "The answer is the question interrogated"; Heisenberg's uncertainty principle; and the topological problem of the Seven Bridges of Königsberg.

In the original production in 1988, Felicity Kendal played Hapgood and Nigel Hawthorne played her friend and superior Blair.