Herman John Koehler (December 14, 1859 – July 1, 1927) was an American football coach, athletics administrator, and United States Army officer. He served as the head football coach at the United States Military Academy from 1897 to 1900, compiling a record of 19–11–3. Koehler was also the Master of the Sword and director of West Point's physical program of instruction. Due to his long-serving tenure and his impact on the Department of Physical Education, he is held in high regard and is considered the "father of the Department of Physical Education" at West Point.