| Lambert Maassen | |
| Birth Date: | 2 September 1941 |
| Birth Place: | Geldrop, Netherlands |
| Death Place: | Geldrop, Netherlands |
| Position: | Striker |
| Youthclubs1: | UNA |
| Years1: | 1961–1963 |
| Clubs1: | PSV |
| Years2: | 1963–1969 |
| Clubs2: | ADO Den Haag |
| Years3: | 1967 |
| Clubs3: | → San Francisco Golden Gate Gales (loan) |
| Caps3: | 4 |
| Goals3: | 3 |
Lambert Maassen (21 September 1941 – 5 May 2018) was a Dutch professional footballer who played for UNA, PSV, ADO Den Haag and the San Francisco Golden Gate Gales as a striker.[1] [2]