• Marottia Rafinesque, 1838 (uncertain)
• Palettia Godinot, 1992 † accepted as Donrussellia Szalay, 1976 †
• Paraottis J.M.H. Shaw, 2002
• Parastia Pandellé, 1898 (uncertain)
• Paratta Sjöstedt, 1921 accepted as Exarna Brunner, 1893
• Parbattia Moore in Hewitson & Moore, 1888
• Parentia Hardy, 1935 [Family: Dolichopodidae]
• Parentia Leman in F. Cuvier, 1825 (uncertain) [Family: Calypogeiaceae]
• Parestia K.B. Presl, 1851 accepted as Davallia Smith, 1793
• Paroaria Bonaparte, 1831
• Parobia Seeman & Nahrung, 2003
• Parodia Spegazzini, 1923
• Paroecia Warren, 1907
• Parogria Borchmann, 1936 accepted as Cerogria Borchmann, 1911
• Paromia Hewitson, 1861 (uncertain) [Family: Nymphalidae]
• Paromia Schaus, 1913 † (uncertain) [Family: Noctuidae]
• Paromia Westwood, 1851 [Family: Nitidulidae]
• Paronia Chelussi, 1903 † accepted as Nummulites Lamarck, 1801 [Family: Nummulitidae]
• Paronia Diamare, 1900 [Family: Anoplocephalidae]
• Paropia Germar, 1833 (uncertain)
• Paroplia Fairmaire, 1903 (uncertain)
• Paroppia Hammer, 1968
• Paropsia Du Petit-Thouars, 1805
• Paropta Staudinger, 1900
• Parosmia Köhler, 1952
• Parothria Hampson, 1901
• Parotia Vieillot, 1816
• Parotis Hübner, 1825
• Parougia Wolf, 1986
• Parrotia C.A. Meyer, 1831 [Family: Hamamelidaceae]
• Parrotia Kieffer, 1923 [Family: Ceratopogonidae]
• Parrottia Macgillivray, 1921
• Parthia Ragonot, 1887
• Parvatia Decaisne, 1837 accepted as Stauntonia A.P. de Candolle, 1817
• Pasottia Parent, Schweigert, Scherzinger & Enay, 2008 †
• Pavarottia Bannikov & Zorzin, 2011 †
• Payettia Dall, 1924 (uncertain)
• Perittia Stainton, 1854
• Phrontia Paetel, 1875 accepted as Phrontis H. Adams & A. Adams, 1853
• Pottia Fürnrohr, 1829
• Prattia A. d'Archiac, 1850 † (uncertain) [Family: Dasycladaceae]
• Prattia d'Archiac, 1848 † [Family: Cheilostomatida (awaiting allocation)]
• Protia Prashad, 1921 accepted as Brotia H. Adams, 1866
• Proutia Tutt, 1899