Peggy Gilbert (January 17, 1905 – February 12, 2007), born Margaret Fern Knechtges, was an American jazz saxophonist and bandleader. She was born in Sioux City, Iowa. When she was seven years old, she played piano and violin with her father's band; she later discovered jazz and started to play the saxophone. After high school, she performed in local theatres and resorts and became a performer on radio and television.