Lasserre (French pronunciation: [lasɛʁ]; Occitan: La Sèrra) is a commune in the Lot-et-Garonne department in south-western France.

Between 2003 and 2008, Gilbert Giraldello, a storekeeper, was the mayor.

Serge Pérès, a farmer, is currently the mayor, since 2008, and re-elected in 2014 and 2020.

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