Tanith Jessica Louise Belbin (born July 11, 1984) is a Canadian-American ice dancer. Though born in Canada, she holds dual citizenship and has competed for the United States 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).