Daniel Chatto St. George Sproule (born April 22, 1957) is the husband of Lady Sarah Armstrong-Jones, who is the daughter of Princess Margaret of the United Kingdom. His father was Thomas Chatto.

Chatto is an actor. He has appeared in such productions as Little Dorrit, The Razor's Edge and Charles & Diana: A Royal Love Story, in which he played Prince Andrew, Duke of York.

The Chattos have two children, Samuel, born in 1996, and Arthur, born in 1999.