Rudy Gaddini (born c. 1934) is a former American football coach. He served as the head football coach and Milton College in Milton, Wisconsin from 1970 to1981, compiling a record of 61–43–5. A native of Chicago, Gaddini attended Fenwick High School in Oak Park, Illinois, where he played high school football and was an all-state fullback. He moved on to Michigan State University, where played college football for the Spartans in 1955 and 1956.