Tanith Jessica Louise Belbin (born July 11, 1984) is a Canadian-American ice dancer. Though she holds dual citizenship, she competes for the United States and has competed for the U.S. since she began skating with Benjamin Agosto in 1998. With Agosto, Belbin is the 2006 Olympic silver medalist, four time World medalist, three time Four Continents champion (2004–2006), and five-time U. S. champion (2004–2008).