| Nelson Silva Pacheco | |
| Fullname: | Alfonso Nelson Silva Pacheco |
| Birth Date: | 8 October 1944 |
| Birth Place: | Las Piedras, Uruguay |
| Position: | Forward |
| Years1: | 1966–1967 |
| Caps1: | 47 |
| Goals1: | 5 |
| Years2: | 1968 |
| Caps2: | 33 |
| Goals2: | 4 |
| Years3: | 1969 |
| Caps3: | 7 |
| Goals3: | 1 |
| Clubs3: | Rosario Central |
| Nationalteam1: | Colombia |
| Nationalyears1: | 1975 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
Alfonso Nelson Silva Pacheco (born 8 October 1944) is a Uruguayan-born Colombian footballer. He played in three matches for the Colombia national football team in 1975.[1] He was also part of Colombia's squad for the 1975 Copa América tournament.[2]