Mayberry R.F.D. is an American television series produced as a spin-off continuation of The Andy Griffith Show. When star Andy Griffith decided to leave his series, most of the supporting characters returned for the retitled program, which ran for three seasons on the CBS Television Network from 1968 to 1971.

Rural Free Delivery (RFD), since 1906 officially rural delivery, is a program of the United States Post Office Department to deliver mail directly to rural destinations. The program began in the late 19th century. Before that, people living in rural areas had to pick up mail themselves at sometimes distant post offices or pay private carriers for delivery.