LNG file is a language data package used by Winamp software. Winamp player debuted in 1997 and remained hugely popular for many years. Thanks to the commitment of developers and the community, the application was translated into many languages – those translation files use the LNG format to store data.

LNG format is a part of the larger plugin packages that use WLZ file extension. ZIP compression allows the file to be small in size. Winamp development was discontinued in 2013.