| Rajaratnam Selvanayagam | |
| Full Name: | Rajaratnam S. Selvanayagam |
| Nationality: | Malaysian |
| Sport: | Field hockey |
| Birth Date: | 1921 |
| Birth Place: | Taiping, Perak, British Malaya |
| Death Date: | 26 December |
| Death Place: | Ipoh, Malaysia |
| Club: | Perak |
Rajaratnam Selvanayagam (1921 - 26 December 1999) was a Malaysian field hockey player. He competed in the men's tournament at the 1956 Summer Olympics.[1]