| Jan Klaassens | |
| Birth Date: | 4 September 1931 |
| Birth Place: | Venlo, Netherlands |
| Death Place: | Netherlands |
| Position: | Midfielder |
| Youthclubs1: | Venlose Boys |
| Years1: | 1948–1959 |
| Years2: | 1959–1964 |
| Years3: | 1964–1967 |
| Clubs3: | VVV-Venlo |
| Nationalyears1: | 1953–1963 |
| Nationalteam1: | Netherlands |
| Nationalcaps1: | 57 |
| Nationalgoals1: | 1 |
Jan Klaassens (4 September 1931 – 12 February 1983) was a Dutch football player who played for VVV-Venlo and Feyenoord, as well as the Netherlands national team.[1] [2]