Louis H. Pinkham Jr. (January 1888 – February 5, 1919) was an American football player and coach. He played college football at the University of Oregon from 1907 to 1910 as a tackle and served as the head football coach at Oregon in 1912, compiling a record of 2–5. He also served as an assistant coach to Oregon in 1910 and 1911. By 1916, Pinkham was working as a land surveyor and civil engineer for the United States Federal Government. Pinkam was commissioned a first lieutenant and served with the United States Army during World War I. He participated in the Meuse-Argonne Offensive and the Second Battle of the Marne. Pinkham died of bronchopneumonia, in France on February 5, 1919.