Leonard Richard "Len" Kunstadt (May 15, 1925 – April 23, 1996) was an American scholar of jazz and blues music, and a record label manager.
Len Kunstadt was born and raised in Brownsville, Brooklyn, New York City.
After serving in the U.S. Air Force in World War II, Lenny graduated from New York University and began his prolific study of jazz and blues music.
Kunstadt continued as editor and publisher of the magazine until the year of his death.
Rosalie Weiner, Kunstadt's sister, donated his papers and archival research to the Institute of Jazz Studies at Rutgers University.