| Intro | Kenyan middle-distance runner and hurdler |
| Is |
Runner Athlete Middle-distance runner Hurdler |
| From | Kenya |
| Type | Sports |
| Gender | male |
| Birth | 10 September 1948 |
| Age: | 71 years |
Cosmas Silei (born 10 September 1948) is a Kenyan former middle distance runner who competed in the 1972 Summer Olympics.