| Lyuben Obretenov | |
| Nationality: | Bulgarian |
| Sport: | Gymnastics |
| Birth Date: | 1 July 1918 |
| Death Place: | Razgrad, Bulgaria |
Lyuben Obretenov (Bulgarian: Любен Обретенов) (1 July 1918 - 2 May 2011) was a Bulgarian gymnast. He competed in eight events at the 1936 Summer Olympics.[1]