Sunnyodon is a tiny, extinct mammal, probably of the Lower Cretaceous. Found in what is now southern England, it was a relatively early member of the also extinct order of Multituberculata. It is part of the suborder Plagiaulacida and family Paulchoffatiidae.The genus Sunnyodon (meaning "Sunny tooth", after Sunnydown Farm) was named by Zofia Kielan-Jaworowska and Ensom P.C.