Sue Townsend
- Birthday: 1946-04-02
- Deathday: 2014-04-10
- Place of birth: Leicester, England, UK
Susan Lillian Townsend FRSL (née Johnstone; 2 April 1946 – 10 April 2014) was an English writer and humorist whose work encompasses novels, plays and works of journalism. She was best known for creating the character Adrian Mole.
