Lácar
Department
Country	Argentina
Province	Neuquén
Capital	San Martín de los Andes
Area
• Total	4,930 km2 (1,900 sq mi)
Population
• Total	24,670
• Density	5.0/km2 (13/sq mi)
Important cities	San Martín de los Andes Chimehuin Paso de Los Indios Puerto Hua Hum Quila Quina Vega Maipu Lolog Lago Hermoso Caleufu

Lácar is a department located in the south of Neuquén Province, Argentina.

The Department limits with Huiliches Department at North, Collón Cura Department at northeast, Rio Negro Province at southeast, Los Lagos Department at south and Chile at east.

40°09′24″S 71°21′09″W / 40.15667°S 71.35250°W / -40.15667; -71.35250