Willard Thomas, better known as Ramblin' Thomas (c. 1902–c. 1945), was an American country blues singer, guitarist and songwriter. He is best remembered for his slide guitar playing and for several recordings he made in the late 1920s and early 1930s. Blues scholars seem undecided if his nickname referred to his style of playing or to his itinerant nature. He was the brother of the blues musician Jesse Thomas.