Thaddeus James "Tad" Martin and Dixie Louise Cooney Martin are fictional characters and a supercouple from the American daytime drama All My Children. Tad is portrayed by Michael E. Knight, and Dixie is portrayed by Cady McClain. On Internet message boards, the couple is often referred to as "T&D" or "TnD".

A supercouple or super couple is a popular and/or wealthy pairing that intrigues and fascinates the public in an intense or obsessive fashion. The term originated in the United States, and it was coined in the early 1980s when intense public interest in fictional soap opera couple Luke Spencer and Laura Webber, from General Hospital, made the pair a popular culture phenomenon.