Warren Michael Manzi (July 1, 1955 – February 11, 2016) was an American playwright and actor, who was best known for the play Perfect Crime.
Manzi was born in Manchester, New Hampshire to a single mother of Italian descent. His family later moved to Lawrence, Massachusetts, where he attended Holy Rosary School and Central Catholic High School. He graduated from the College of the Holy Cross and obtained a master's degree from the Yale School of Drama. Manzi wrote Perfect Crime in 1980 at age 25, while an understudy for a role in Amadeus. Early reviews of Perfect Crime described it as confusing, and Manzi continually rewrote the play throughout the rest of his life. Perfect Crime opened in New York City on April 18, 1987 and was performed over 11,800 times throughout Manzi's lifetime, becoming the longest running play in city theatre history. Manzi also wrote One for the Money and The Queen of the Parting Shot.
- Marquard, Bryan (February 17, 2016). "Warren Manzi, at 60; wrote N.Y.'s longest-running play". Boston Globe. Retrieved February 19, 2016.
- Fox, Margalit (February 14, 2016). "Warren Manzi, Whose 'Perfect Crime' Is New York's Longest-Running Play, Dies at 60". New York Times. Retrieved February 15, 2016.