Michelle Duncan (born 14 April 1978) is a Scottish actress. She was nominated for a BAFTA Scotland Award for her performance in Sea of Souls.

Born in Perth, Duncan trained in acting at Queen Margaret University, Edinburgh before studying English and Classics at St Andrew's University. She moved to London in February 2005. Her roles on TV include Sugar Rush, Doctor Who, "Low Winter Sun", "Lost in Austen", and a TV film, Whatever Love Means, as Princess Diana.