Porpentine is an archaic term for a porcupine.
Porpentine may also refer to: Porpentine Charity Heartscape, a writer, video game designer, and artist The Porpentine, an inn in William Shakespeare's play The Comedy of Errors Porpentine, a fictional character in Thomas Pynchon's spy novella "Under the Rose" The Porpentine, a magical jewel in Neil Gaiman's graphic novel The Sandman: A Game of You Frederico the Porpentine, a fictional character in Dan Wickenden's children's fantasy novel The Amazing Vacation
See also Porpentina Goldstein, fictional character in Fantastic Beasts and Where to Find Them (film)