Lorenzo Semple Jr.
- Birthday: 1923-03-27
- Deathday: 2014-03-28
- Place of birth: Mount Kisco, New York, USA
- Also know as: Lorenzo Semple
Lorenzo Semple Jr. was an American film and television screenwriter, best known for his work on the television series "Batman" and the feature films "The Parallax View", "Papillon", and "Three Days of the Condor".
