| Manuel Nájera | |
| Fullname: | Manuel Nájera Siller |
| Birth Date: | 20 December 1952 |
| Birth Place: | Cuautla, Morelos, Mexico |
| Position: | Defender |
| Years1: | 1971–1973 |
| Clubs1: | Club Atlético Zacatepec |
| Years2: | 1973–1975 |
| Clubs2: | Puebla F.C. |
| Years3: | 1975–1979 |
| Clubs3: | Club Universidad de Guadalajara |
| Caps3: | 105 |
| Goals3: | 1 |
| Years4: | 1979–1980 |
| Clubs4: | CSD Jalisco |
| Caps4: | 27 |
| Goals4: | 2 |
| Years5: | 1980–1983 |
| Clubs5: | C.F. Monterrey |
| Caps5: | 83 |
| Goals5: | 0 |
| Nationalyears1: | 1972–1979 |
| Nationalteam1: | Mexico |
| Nationalcaps1: | 20 |
| Nationalgoals1: | 0 |
Manuel Nájera Siller (born 20 December 1952) is a Mexican former football defender who played for Mexico in the 1978 FIFA World Cup.[1] He also played for Club Universidad de Guadalajara.