James Edwards Yancey (February 20, c. 1895 – September 17, 1951) was an American boogie-woogie pianist, composer, and lyricist. One reviewer described him as “one of the pioneers of this raucous, rapid-fire, eight-to-the-bar piano style”.

Jimmy Yancey was born in Chicago, Illinois, most likely in 1895. However, at different times he stated 1900 and 1903, and other sources give 1894 or 1898. Researchers Bob Eagle and Eric LeBlanc suggest 1901.

His brother, Alonzo Yancey (1897–1944), was also a pianist, and their father was a vaudeville guitarist and singer. By age ten, Yancey had toured across the United States as a tap dancer and singer, and by twenty he had toured throughout Europe. He began teaching himself to play the piano at the age of 15, and by 1915 had gained a sufficient profile to influence younger musicians, including Meade Lux Lewis and Albert Ammons.

Jimmy played in a boogie-woogie style, with a strong-repeated figure in the left hand and melodic decoration in the right, but his playing was delicate and subtle rather than hard driving. He popularized the left-hand figure that became known as the “Yancey bass”, later used in Pee Wee Crayton‘s “Blues After Hours“, Guitar Slim‘s “The Things That I Used to Do”, and many other songs. Yancey favored keys—such as E-flat and A-flat—that were atypical for barrelhouse blues. Distinctively, he ended many pieces in the key of E-flat, even if he had played in a different key until the ending.