thumb|1921 Wills Sainte Claire Roadster
Wills Sainte Claire was an American automobile brand manufactured by C. H. Wills and Company, in Marysville, Michigan, from 1921 to 1927. Childe Harold Wills, the company founder, was a perfectionist and his automobile company focused on very high quality cars.
As a metallurgical engineer, Wills was an aide of Henry Ford. Wills introduced vanadium steel for the production of the Ford Model T; it was the first the large scale application of the alloy. Wills was also a designer and is credited with designing the script "Ford Blue Oval" emblem that the company uses to this day.