William Caldwell was an American football player and coach. He served as the head football coach at Haskell InstituteâÂÂnow known as Haskell Indian Nations UniversityâÂÂin Lawrence, Kansas for one season, in 1910, and Muskingum CollegeâÂÂnow known as Muskingum University in New Concord, Ohio for one season, in 1911, compiling a career college football coaching record of 2âÂÂ13. Caldwell played college football for three seasons, from 1907 to 1909, at the University of Kansas.
Caldwell was a three-time letter winner at the University of Kansas, playing tackle and end.
Caldwell's first coaching job was as the head football coach at Haskell InstituteâÂÂnow known as Haskell Indian Nations UniversityâÂÂin Lawrence, Kansas in 1910.
In 1911, he served as the head football coach at Muskingum CollegeâÂÂnow known as Muskingum UniversityâÂÂin New Concord, Ohio.
In 1914, Caldwell worked as a teacher at West Technical High School in Cleveland, Ohio.