| Gérald Martineau | |
| Office1: | Member of the Legislative Council of Quebec for des Laurentides |
| Predecessor1: | Thomas Chapais |
| Successor1: | Antonio Auger |
| Term Start1: | 1946 |
| Term End1: | 1959 |
| Office2: | Member of the Legislative Council of Quebec for Lauzon |
| Predecessor2: | Émile Moreau |
| Successor2: | Abolished in 1968. |
| Term Start2: | 1959 |
| Term End2: | 1968 |
| Birth Date: | 31 July 1902 |
| Birth Place: | Quebec City, Quebec |
| Death Place: | Sainte-Foy, Quebec |
| Party: | Union Nationale |
Gérald Martineau (July 31, 1902 - May 18, 1968) was a political boss in Quebec, Canada.
He was born on July 31, 1902, in Quebec City and was a business person.
From the 1944 provincial election to the 1960 election, Martineau was the treasurer of the Union Nationale.
He was appointed to the Legislative Council of Quebec in 1946, representing the division of Les Laurentides until 1959 and the division of Lauzon from 1959 to 1967.
Martineau appeared before the Salvas Commission of Inquiry and was convicted on eight counts of fraud in 1967.
He died on May 18, 1968.