| Louis Mermaz | |
| Office: | President of the French National Assembly |
| Term Start: | 2 July 1981 |
| Term End: | 1 April 1986 |
| Predecessor: | Jacques Chaban-Delmas |
| Successor: | Jacques Chaban-Delmas |
| Office2: | French Governmental Affairs Spokesman |
| Term Start2: | 1992 |
| Term End2: | 1993 |
| President2: | François Mitterrand |
| Primeminister2: | Pierre Bérégovoy |
| Predecessor2: | Martin Malvy |
| Successor2: | Nicolas Sarkozy |
| Office4: | Deputy for Isère's 8th constituency in the French National Assembly |
| Term Start4: | 1997 |
| Term End4: | 2001 |
| Predecessor4: | Bernard Saugey |
| Successor4: | Jacques Remiller |
| Birth Date: | 20 August 1931 |
| Birth Place: | Paris, France |
| Death Place: | Limours, France |
| Party: | Socialist Party |
Louis Mermaz (20 August 1931 – 15 August 2024) was a French politician.
Mermaz became an ally of François Mitterrand in the late 1950s and in 1971 became a member of Mitterrand's staff in the French Socialist Party. In 1967, he was elected Deputy of Isère for the first time.
In 1981, he was appointed Minister of Transport in the first government of socialist Pierre Mauroy, before his election to Presidency of the National Assembly. He served in this office to 1986.[1] He served as Minister of Agriculture from 1990 to 1992, and Minister of Relations with Parliament in the Bérégovoy government from 1992 to 1993.[2] He was also Government's spokesperson in the same cabinet.
From 2001 to 2011, he was senator of Isère.
Mermaz died in Limours on 15 August 2024, at the age of 92.[3]