John Carlyle Balfanz (June 23, 1940 – November 11, 1991) was an American ski jumper.

He took part in the 1962 World Championships in Poland, and in 17 international meets in Europe in 1963, winning two, and placing second at the Holmenkollen Ski Festival.

In 1965 he set a U.S. national record at 325 feet (99 m) at Iron Mountain, Michigan.

Balfanz retired from competitions after the 1968 Olympics, and later worked a national jumping coach.

This biographical article relating to American ski jumping is a stub.