| 47 Ursae Majoris d | |
| Discoverer: | Gregory and Fischer |
| Discovery Site: |  United States |
| Discovered: | 6 March 2010 |
| Discovery Method: | Doppler spectroscopy (Bayesian Kepler periodogram) |
| Apsis: | astron |
| Semimajor: | 11.6 AU |
| Eccentricity: | 0.16 |
| Period: | 14,002 d ~38.33 y |
| Time Periastron: | 2,451,736 |
| Arg Peri: | 110 |
47 Ursae Majoris d (sometimes abbreviated 47 Uma d) is an extrasolar planet approximately 46 light-years away in the constellation of Ursa Major. The planet was discovered located in a long-period orbit (38 years) around the star 47 Ursae Majoris. As of 2011, it is the outermost of three known planets in its planetary system. It has a mass of at least 1.64 times that of Jupiter. It is the longest-period planet detected by Doppler spectroscopy. The evidence of this planet was found by Bayesian Kepler periodogram in March 2010.