| 79 Ceti b | |
| Discoverer: | California and Carnegie Planet Search |
| Discovery Site: | W. M. Keck Observatory |
| Discovered: | March 29, 2000 |
| Discovery Method: | Doppler spectroscopy |
| Apsis: | astron |
| Semimajor: | 0.363± |
| Eccentricity: | 0.252±0.052 |
| Period: | 75.523±0.055 d |
| Time Periastron: | 2,450,338.0±3.0 |
| Arg Peri: | 42±14 |
| Semi-Amplitude: | 11.99±0.87 |
| Star: | 79 Ceti |
| Mass: | >0.260±0.028 |
79 Ceti b (also known as HD 16141 b) is an extrasolar planet orbiting 79 Ceti every 75 days. Discovered along with HD 46375 b on March 29, 2000, it was the joint first known extrasolar planet to have minimum mass less than the mass of Saturn.