Extant is the opposite of the word extinct. It may refer to:Neontology, the study of extant taxa Extant hereditary titles Extant literature, surviving literature, such as Beowulf, the oldest extant manuscript written in English Extant taxon, a taxon which is not extinct, such as an extant species Extant Theatre Company, a disability arts organisation Extant , an American television series Hank Hall, also known as Extant, a DC Comics supervillain