Russel S. "Russ" Witherby (born February 3, 1962 in Cincinnati, Ohio) is an American coach and former competitive figure skater. He competed in ice dance with several partners. He and April Sargent Thomas competed in the 1992 Winter Olympics. His other partners included Lois Luciani and Susie Wynne.
He is currently coaching at the Toyota Sports Center in El Segundo, California.
Witherby began dating fashion designer Michael Kuluva in December 2012 and they got engaged in December 2013. They married on December 13, 2014 at the Ritz-Carlton in Rancho Mirage, CA.