Appia may refer to:
Places Appian Way (In Italian and Latin: Via Appia), one of the earliest and strategically most important Roman roads of the ancient republic Appia (Phrygia), a town and bishopric of ancient Phrygia, now in Turkey Aqua Appia, the first ancient Roman aqueduct, constructed in 312 BC
People Appia gens, family at ancient Rome Adolphe Appia (1862–1928), Swiss architect and theorist of stage lighting and décor Dominique Appia (1926–2017), Swiss painter who lived and worked in the city of Geneva Louis Appia (1818–1898), surgeon with special merit in military medicine Saint Appia (1st century AD), wife of Philemon, recipient of a letter from Paul the Apostle
Nature Appia (skipper), genus of skipper butterflies in the family Hesperiidae
Other uses Appia (software), free and open-source layered communication toolkit implemented in Java Lancia Appia, car introduced in 1953 as a replacement for the Ardea, produced for 10 years
See also Appian (disambiguation) Appiah, Ghanaian surname Appias (genus), genus of butterflies Appias, naiad and one of the Crinaeae