Martine Lignières-Cassou (born February 22, 1952 in Algiers) is a member of the National Assembly of France.
She represents the Pyrénées-Atlantiques department, 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.