| Horst Nemec | |
| Birth Date: | 25 January 1939 |
| Birth Place: | Austria |
| Position: | Forward |
| Youthclubs1: | Rudolfsheimer AC |
| Years1: | 1956–1958 |
| Clubs1: | SC Helfort Wien |
| Years2: | 1958–1966 |
| Clubs2: | FK Austria Wien |
| Caps2: | 185 |
| Goals2: | 132 |
| Years3: | 1966–1969 |
| Clubs3: | First Vienna FC |
| Caps3: | 35 |
| Goals3: | 12 |
| Nationalyears1: | 1959–1966 |
| Nationalteam1: | Austria |
| Nationalcaps1: | 29 |
| Nationalgoals1: | 16 |
Horst Nemec (25 January 1939 - 23 June 1984) is an Austrian football forward who played for Austria in the 1960 European Nations' Cup.[1] He also played for FK Austria Wien.