| Headercolor: | lightblue |
| Boldbaataryn Bütekh-Üils | |
| Birth Date: | 10 February 1990 |
| Birth Place: | Ulaanbaatar, Mongolia |
| Weight: | 700NaN0 |
| Sport: | Swimming |
| Event: | Breaststroke |
| Show-Medals: | yes |
Boldbaataryn Bütekh-Üils (mn|Болдбаатарын Бүтэх-Үйлс; born February 10, 1990, in Ulaanbaatar) is a Mongolian swimmer, who specialized in breaststroke events.[1] Boldbaatar represented Mongolia at the 2008 Summer Olympics in Beijing, and competed for the men's 100 m breaststroke event. He swam in the second heat of the competition, finishing in sixth place, with a time of 1:10.80. Boldbaatar, however, failed to advance into the semi-finals, as he placed sixtieth in the overall rankings.[2]