Sophie Fiennes
- Birthday: 1967-02-12
- Place of birth: Ipswich, England, UK
- Also know as: Ethel Shepherd
Sophia Victoria Twisleton-Wykeham-Fiennes (born 12 February 1967), better known as Sophie Fiennes, is an English film director and producer. She is the sister of actors Ralph Fiennes and Joseph Fiennes, director Martha Fiennes and composer Magnus Fiennes.
