• Coruna Walker, 1833
• Paguna David, 1871 accepted as Paguma Gray, 1831
• Papuna Noyes & Hayat, 1984 (uncertain)
• Parauna Lane, 1972
• Parena Motschoulsky, 1860
• Phorina Rafinesque ex Steudel, 1824 (uncertain)
• Piruna Evans, 1955
• Pituna Costa, 1989
• Porana N.L. Burman, 1768
• Poranga Gonçalves & Da-Silva, 2012
• Porania Gray, 1840
• Porcia Grube, 1859 (uncertain)
• Porcula Hodgson, 1847 accepted as Sus Linnaeus, 1758
• Porela Walker, 1855
• Porina Acharius, 1809 (unaccepted) [Family: Porinaceae]
• Porina d'Orbigny, 1852 [Family: Porinidae]
• Porina J. Müller Arg., 1883 accepted as Pertusaria A.P. de Candolle in Lamarck & A.P. de Candolle, 1805 [Family: Pertusariaceae]
• Porina Walker, 1856 (unaccepted) [Family: Lepidoptera (awaiting allocation)]
• Pornus Sowerby, 1842 (uncertain)
• Porona Schaus, 1901
• Poronea Rafinesque, 1815
• Poronia Récluz, 1843 accepted as Lasaea Brown, 1827 [Family: Lasaeidae]
• Poronia S.F. Gray, 1821 [Family: Xylariaceae]
• Poronia Willdenow, 1787 [Family: Xylariaceae]
• Porroa Quatrefages, 1866 (uncertain > nomen dubium)
• Portea K.H.E. Koch, 1856
• Portena González-Sponga, 2008
• Portia Karsch, 1878 [Family: Salticidae]
• Portia Langerhans, 1880 (unaccepted) [Family: Orbiniidae]
• Portula J. Hill, 1756 (uncertain)
• Portuna Nuttall, 1842 (uncertain)
• Porzana Vieillot, 1816