Donald "Donn" Trenner (March 10, 1927 – May 16, 2020) was an American jazz pianist and arranger. He was born in New Haven, Connecticut. In the 1960s, Trenner worked as a studio musician, and led The Steve Allen Show house band.
From 1966 to 1978, he was married to actress B. J. Ward. From 1990 until her death in 2005, he was married to Marycarmen Jones. They had one daughter.
Trenner died on May 16, 2020 at the age of 93.
- Donn Trenner Interview NAMM Oral History Library (2004)