Judith Aileen Dyble (pronounced Die-bull; 13 February 1949 – 12 July 2020) was an English singer-songwriter and pianist. She was known for being a vocalist and a founding member of Fairport Convention and Trader Horne. She and Ian McDonald joined and recorded several tracks with Giles, Giles and Fripp, who later became King Crimson. Dyble was born in London.