Gold medal figure skater Evan Lysacek and sportscaster Erin Andrews will also compete.
Lysacek recently became the first American man since Brian Boitano to win the Olympic gold in Vancouver. Andrews is an ESPN reporter who was in the headlines last year after a man shot nude videos of her through a hotel room peephole and posted them online.
"Dancing With the Stars" returns March 22 with a cast that includes model-actress Pamela Anderson and astronaut Buzz Aldrin.