| Mariette Laenen | |
| Fullname: | Mariette Laenen |
| Birth Date: | 1 March 1950 |
| Birth Place: | Hulshout, Belgium |
| Role: | Rider |
Mariette Laenen (born 1 March 1950) is a former Belgian racing cyclist. She won the Belgian national road race title in 1971, 1972 and 1975.[1]