| 121P/Shoemaker-Holt | |
| Discoverer: | Carolyn S. Shoemaker Eugene Merle Shoemaker Henry E. Holt |
| Discovery Date: | March 9, 1989 |
| Designations: | 1988 XI; 1995 Q3 |
| Epoch: | March 6, 2006 |
| Semimajor: | 4.013 AU |
| Perihelion: | 2.65 AU |
| Aphelion: | 5.376 AU |
| Eccentricity: | 0.3396 |
| Period: | 8.039 a |
| Inclination: | 17.7218° |
| Last P: | September 8, 2013[1] September 1, 2004 |
| Next P: | 2023-Jun-28[2] |
121P/Shoemaker–Holt, also known as Shoemaker-Holt 2, is a periodic comet in the Solar System.