Loncopué is a department located in the west of Neuquén Province, Argentina.

The department is the site of an ongoing dispute between local Mapuche communities and Chinese mining interest.

[1] It is the first such conflict in Neuquén Province.

[1] The Department limits with Ñorquín Department at north, Pehuenches Department at north east, Confluencia Department at east, Picunches Department at south and Chile at east.