Francis Hillman “Scrapper” Blackwell (February 21, 1903 – October 7, 1962) was an American blues guitarist and singer, best known as half of the guitar-piano duo he formed with Leroy Carr in the late 1920s and early 1930s. He was an acoustic single-note picker in the Chicago blues and Piedmont blues styles. Some critics have noted that he veered towards jazz.

Blackwell was born in Syracuse, South Carolina, one of sixteen children of Payton and Elizabeth Blackwell. He was part Cherokee. He grew up in and spent most of his life in Indianapolis, Indiana. He was given the nickname “Scrapper” by his grandmother, because of his fiery nature. His father played the fiddle, but Blackwell was a self-taught guitarist, building his first guitar out of a cigar box, wood and wire. He also learned to play the piano, occasionally performing professionally. By his teens, Blackwell was a part-time musician, traveling as far as Chicago. He was known for being withdrawn and hard to work with, but he established a rapport with the pianist Leroy Carr, whom he met in Indianapolis in the mid-1920s, and they had a productive working relationship. Carr convinced Blackwell to record with him for Vocalion Records in 1928; the result was “How Long, How Long Blues“, the biggest blues hit of that year.

Blackwell also made solo recordings for Vocalion, including “Kokomo Blues”, which was transformed into “Old Kokomo Blues” by Kokomo Arnold and later reworked as “Sweet Home Chicago” by Robert Johnson. Blackwell and Carr toured throughout the American Midwest and South between 1928 and 1935 as stars of the blues circuit, recording over 100 sides. “Prison Bound Blues” (1928), “Mean Mistreater Mama” (1934), and “Blues Before Sunrise” (1934) were popular tracks.