| 99P/Kowal | |
| Discoverer: | Charles T. Kowal |
| Discovery Date: | April 24, 1977 |
| Designations: | 1977 III; 1992 VI |
| Epoch: | March 6, 2006 |
| Semimajor: | 6.099 AU |
| Perihelion: | 4.719 AU |
| Aphelion: | 7.48 AU |
| Eccentricity: | 0.2264 |
| Period: | 15.06 a |
| Inclination: | 4.3462° |
| Last P: | April 12, 2022[1] January 15, 2007 |
| Next P: | 2037-May-06 |
99P/Kowal, also known as Kowal 1, is a periodic comet in the Solar System that orbits out by Jupiter and has a 15 year orbital period. It has been observed regularly since 2019. It came to perihelion in April 2022 and will again in May 2037.