Aymeri de Montesquiou-Fezensac (born 7 July 1942 in Marsan, Gers) was a member of the Senate of France, representing the Gers department.
He is a member of the Republican Party.
Since 1976, he is the mayor of Marsan.
President of the Franco-Iranian Friendship organisation.
He was allowed to change his name to Aymeri de Montesquiou-Fezensac d'Artagnan on May 18, 2011.