Masseube (French pronunciation: [masœb]; Masseuva in Gascon) is a commune in the Gers department in the Occitanie region in southwestern France.

Masseube ("The farmhouse of the forest") was originally the name of a farm belonging to Escaladieu Abbey, in Bigorre.

In 1274, the Abbey and Bernard IV of Astarac founded a bastide in Masseube.

During the Nazi occupation of Vichy France, there was a Jewish internment camp.

[4] There were no medical services, showers, or hot water provided to the Jews in the camp.