| HD 109749 b | |
| Discoverer: | Fischer et al. |
| Discovery Site: | Keck Observatory |
| Discovered: | August 22, 2005 |
| Discovery Method: | Doppler spectroscopy (N2K Consortium) |
| Apsis: | astron |
| Semimajor: | AU |
| Eccentricity: | 0 (fixed) |
| Period: | d |
HD 109749 b is an extrasolar planet that takes only 5.24 days to orbit the star HD 109749 at a distance of 0.063 AU. It was discovered on August 22, 2005, the same day as Gliese 581 b.