| Peperomia pseudoalpina Trel., 1929 |
| Peperomia pseudoasarifolia Callejas & G. Mathieu, 2018 |
| Peperomia pseudopereskiifolia C. DC., 1869 |
| Peperomia pterocaulis Miq., 1843 |
| Peperomia puberulescens Callejas, 2020 |
| Peperomia puberulilimba C. DC., 1920 |
| Peperomia purpurinervis C. DC., 1917 |
| Peperomia quadrifolia (L.) Kunth, 1816 |
| Peperomia questionis G. Mathieu, 2012 |
| Peperomia reflexa Kunth, 1816 |
| Peperomia reptabunda Trel., 1929 |
| Peperomia rhexiifolia Moritzi ex C. DC., 1869 |
| Peperomia riocangrejalensis Trel., 1940 |
| Peperomia roqueana Trel., 1936 |
| Peperomia rotundifolia (L.) Kunth, 1816 |
| Peperomia rubefacta Trel., 1938 |
| Peperomia rupestris Kunth, 1816 |
| Peperomia rupigaudens C. DC., 1920 |
| Peperomia san-carlosiana C. DC., 1866 |
| Peperomia san-felipensis C. DC., 1894 |