Blues Boy Willie (born William Daniel McFall, November 28, 1946) is an American electric and soul blues singer, musician, and songwriter. Influenced jointly by his grounding in gospel and Junior Parker's recordings, Blues Boy Willie's songwriting has produced gritty songs, including "Be Who?", "Injustice", and "The Fly".
He has released ten albums and a string of singles in a long career, including work which appeared in the US Billboard R&B albums chart. Steve Leggett of AllMusic stated that Blues Boy Willie "makes things work by the sheer force of his engaging personality."