John Luther Zimmerman IV (born November 26, 1973) is an American professional pair skater and coach. With skating partner Kyoko Ina, he is the 2002 World bronze medalist and a three-time U.S. national champion. They also competed at the 2002 Olympics and won the bronze medal. He briefly partnered with Brie Teaboldt for the 1994-95 season. Then he paired with Stephanie Stiegler from 1995 through 1998, and won the bronze medal at the 1997 U.S. Figure Skating Championships while being coached by Peter Oppegard. Their partnership ended in 1998 due to injuries.
He teamed up with Kyoko Ina in 1998. They won the bronze medal at the 2002 World Championships. In 2003, they turned professional and began skating on Stars on Ice.
He was featured as Yahoo's special guest expert correspondent for figure skating at the 2006 Winter Olympics in Turin.
He was suspended by the United States Center for SafeSport in March 2021 for a two-year period.
