| HD 37124 d | |
| Discoverer: | Marcy et al. |
| Discovery Site: | United States |
| Discovered: | 24 June 2005 |
| Apsis: | astron |
| Semimajor: | 3.19AU |
| Eccentricity: | 0.2 |
| Period: | 2,295 d |
| Time Periastron: | 2,449,606 |
| Arg Peri: | 266 |
| Semi-Amplitude: | 12.2 |
HD 37124 d is an extrasolar planet approximately 103 light-years away in the constellation of Taurus. The planet was discovered in 2005 orbiting the star HD 37124 in a long-period orbit. Based on its mass, it is considered to be a gas giant. An alternative solution to the radial velocities gives a period of 29.92 days and a minimum mass 17% that of Jupiter.