John Mortimer
- Born
- 21 April 1923 (85 years old)
- Passed away
- 16 January 2009
- Place of birth
- Hampstead, London, United Kingdom
- Gender
- Male
Sir John Clifford Mortimer CBE QC FRSL was an English barrister, dramatist, screenwriter, and author. Mortimer was a prolific writer for the theatre, films (starting during World War II, when he wrote scripts for the Crown Film Unit), television and radio. He also wrote fiction and was a trial attorney for more than 30 years.
