Geraldine is a large radish which appeared in the third season Fraggle Rock episode "The Great Radish Caper".

Grown in the Gorgs' Garden, Geraldine is an abnormally large example of a radish, the result of constant love and nurturing by Junior Gorg. Geraldine is the closest thing Junior has to a friend, and barely escapes consumption by Boober Fraggle and the others. Other radishes have also been named by Junior, including Betty, but Geraldine remains his favorite.