Nelson A. Kellogg (c. 1881 – November 23, 1945) was a track athlete, American football, basketball, and baseball coach, and college athletics administrator. He served as the head football coach at Northern Illinois University from 1906 to 1909, compiling a record of 8–17–3. Kellogg was also the head basketball coach at Northern Illinois from 1906 to 1910 and the head baseball coach at the school from 1907 to 1910. He ran track at the University of Michigan, from which he graduated in 1904.