Mark Andrew Henderson (born November 14, 1969) is a United States Olympic champion and former world record-holder.

Upon his retirement from swimming, Henderson worked in the financial industry, concentrating on Japan and U.S. equities for 16 years for the likes of JP Morgan Securities, Citigroup, and Janney Montgomery Scott.

They did this by providing an easy way for elite athletes and experts in all fields of sports (coaching, parenting, nutrition, psychology, strength training, injury prevention, etc.)

Mark is a partner at a financial advisory firm (Westhoff-Henderson Group - a subsidiary of Raymond James) that specializes in high-net-worth individuals/families and professional athletes.

They have two children: Brooke and Brady, a Black Labrador (Hank), a Double Dapple Dachshund (Gator), and a Catahoula leopard dog (Lax).

Mark and his family live in Bend, Oregon and Bradenton,Florida, where they spend their free time hiking, mountain biking, skiing, snowboarding, and wakeboarding.

Mark has also been very active in giving back to the global swimming community by answering questions from athletes, parents and coaches located all over the world on the platform.