| Martine Lignières-Cassou | |
| Office: | Member of the French National Assembly for Pyrénées-Atlantiques's 1st constituency |
| Term Start: | 12 June 1997 |
| Term End: | 2017 |
| Office2: | Mayor of Pau |
| Term Start2: | 2008 |
| Term End2: | 2014 |
| Predecessor2: | Yves Urieta |
| Successor2: | François Bayrou |
| Birth Date: | 22 February 1952 |
| Birth Place: | Algiers, French Algeria |
| Nationality: | French |
| Party: | Socialist Party |
| Alma Mater: | University of Pau and Pays de l'Adour |
| Successor1: | Josy Poueyto |
| Predecessor1: | Jean Gougy |
Martine Lignières-Cassou (in French pronounced as /maʁtin liɲjɛʁ kasu/; born 22 February 1952) is a French politician who was a member of the National Assembly for 20 years. She represented the 1st constituency in the Pyrénées-Atlantiques department,[1] and is a member of the Socialist Party and of the Socialiste, radical, citoyen et divers gauche parliamentary group. She was the mayor of Pau, Pyrénées-Atlantiques from 2008 to 2014. In the 1970s she was a member of the Revolutionary Communist League (LCR) before joining the Socialist Party in 1975.