Lozère (French pronunciation: [lɔzɛʁ]; Occitan: Losera), is a department in southeast France near the Massif Central, named after Mont Lozère.

Lozère is one of the original 83 departments created during the French Revolution on March 4, 1790. It was created from part of the former province of Languedoc.

The Beast of Gévaudan was a creature that terrorized the general area of the former province of Gévaudan, with nearly identical borders to today's Lozère, in the Margeride Mountains, in the general timeframe of 1764 to 1767.

Pliny's Natural History praised the cheese of Lozère:

The geography of Lozère is complicated, covering four mountain ranges. In the north-west, the basalt plateau of Aubrac rises between 1,000 and 1,450m, with a cold humid climate influenced by the Atlantic. The north and north-east of the department contains the Margeride mountains, which are formed of granite, and have peaks between 1,000 and 1,550m. The climate here is also cold, but dryer than Aubrac, with less snow.