| Sergio Rojas | |
| Fullname: | Wenceslao Sérgio Rojas Vargas |
| Birth Date: | 28 September 1940 |
| Nationalteam1: | Paraguay |
| Nationalyears1: | 1964–1971 |
| Nationalcaps1: | 29 |
| Nationalgoals1: | 0 |
Wenceslao Sérgio Rojas Vargas (28 September 1940 - 6 March 2010) was a Paraguayan footballer.[1] He played in 29 matches for the Paraguay national football team from 1964 to 1971. He was also part of Paraguay's squad for the 1967 South American Championship.[2]