Line 1 is an 18.8-kilometre (11.7 mi) rapid transit line, part of the Naples Metro in Naples, Italy. As of July 2023, Line 1 connects 19 stations. It is operated by Azienda Napoletana Mobilità SpA (ANM). The line has been renamed Metrò dell'Arte reflecting the presence of contemporary art works installed in some of its stations.

The Naples Metro is a rapid transit system serving the city of Naples, Campania, Italy and some parts of the adjacent comuni of its metropolitan area through Line 11. The system comprises four underground rapid transit lines.