Lanuza is a populated place belonging to the Spanish municipality of Sallent de Gállego, in the province of Huesca, Aragon.

The inhabitants were forced to leave in 1978 in order to create a water reservoir that was projected to flood the town.

[1] Consequently, Lanuza was stripped of its municipality status and the land was incorporated as part of Sallent de Gállego.

[2] The projections that the town would be destroyed entirely, however, proved inaccurate, as only some of the buildings ended up underwater.

[1] Former residents that had been forced to leave campaigned to return to and rebuild Lanuza in the 1990s, and the town has since been repopulated.