Ken Greengrass was a producer and personal manager whose clients included such stars as Diahann Carroll, Steve Lawrence and Eydie Gorme, Florence Henderson, Art Garfunkel and many others. He received three Daytime Emmy nominations for different children's programs.

Greengrass was born in the Bronx, New York, and graduated from the Manhattan School of Music. He broke into show business as a professional trumpet player, which prepared him well when he began managing artists and producing many of their albums, which resulted in dozens of gold records.

He produced programs with several of his clients, including the 1967 specal C'est la vie, with Diahann Carroll and Maurice Chevalier. His other TV credits included A Piece of Cake, C'mon Saturday, My Father the Circus King and The Secrets of San Simeon. He received his Daytime Emmy nominations in 1978 for the special How the Beatles Changed the World, in 1979 for the series Dear Alex and Annie and in 1981 for the informational program The Doughnuts.

Greengrass died in New York on April 10, 2014. He was 87.