Poekilopleuron (meaning "varied ribs") is a megalosauroid dinosaur. The genus has been used under many different spelling variants, although only one, "Poekilopleuron", is valid. The type species is "P. bucklandii" (see also "Megalosaurus"), named after William Buckland, and many junior synonyms of it have also been erected. Few material is currently known, as the holotype was destroyed in World War II, although many casts of the material still exist.