P. carnea may refer to:
Palaeaspilates carnea, a geometer moth Peachia carnea, a sea anemone Peniophora carnea, a wood-decay fungus Phlox carnea, a flowering plant Phytometra carnea, an owlet moth Pinna carnea, a bivalve mollusc Pitcairnia carnea, a flowering plant Prodioxys carnea, an Israeli bee Pseudosimnia carnea, a sea snail Pseudothyretes carnea, a wooly bear Pyura carnea, a sessile ascidian