What Darwin Didn't Know
- Genre: Documentary
- Status: Ended
- Episode Runtime: 90 min.
- Production Company: BBC Four
- Production Country: United Kingdom
- Network: BBC Four
What Darwin Didn't Know is a documentary show on BBC Four presented by Armand Marie Leroi which charts the progress in the field of Evolutionary Theory since the original publication of 'On the Origin of Species' in 1859.
