James Herbert Wacker was an American football coach and college athletics administrator. He served as the head football coach at Texas Lutheran University (1971–1975), North Dakota State University (1976–1978), Southwest Texas State University—now Texas State University (1979–1982), Texas Christian University (1983–1991), and the University of Minnesota (1992–1996), compiling a career college football record of 159–131–3. Wacker won two NAIA Division II National Championships with Texas Lutheran in 1974 and 1975, and two NCAA Division II Football Championships with Southwest Texas State, in 1981 and 1982.