Cleopatra "Cleo" Demetriou (born April 23, 2001) is a British child actor who played Matilda in the West End.
- The Sound of Music as Gretl Von Trapp
- Enron as Daughter
- Les Misérables as Little Cosette
- Matilda the Musical as Matilda Wormwood
- So Awkward as Lily Hampton
- Cleo had her first performance in October 28, 2011 and her final performance on August 18, 2012.
- Cleo broke her contract with Les Misérables in order to play Matilda.
- Cleo was born in Cyprus.