- Palliatus Schulman, Kovaleva & Dubina, 1979
- Paramyxoproteus Wierzbicka, 1986
- Parvicapsula Shulman, 1953
- Parvicapsulidae Shulman, 1953
- Pentacapsula Naidenova & Zaika, 1970
- Pentacapsulidae
- Platysporina
- Polysporoplasma Sitja-Bobadilla & Alvarez-Pellitero, 1995
- Pseudoalataspora Kovaljova & Gaevskaya, 1983