Deutsche Lufthansa AG (FWB: LHA, OTCQX: DLAKY) (German pronunciation: [ˈdɔʏt͡ʃə ˈlʊfthanza], commonly known as just Lufthansa and sometimes internationally as Lufthansa German Airlines) is the flag carrier of Germany and the largest airline in Europe, both in terms of overall passengers carried and fleet size. The German government had a 35.68% stake in Lufthansa until 1997, but the company is now owned by private investors (88.52%), MGL Gesellschaft für Luftverkehrswerte (10.05%), Deutsche Postbank (1.03%), and Deutsche Bank (0.4%) and has 119,084 employees (as of 2011). The name of the company is derived from Luft (the German word for "air"), and Hansa (after the Hanseatic League).

The airline is the world's fourth-largest airline in terms of overall passengers carried, operating services to 18 domestic destinations and 197 international destinations in 78 countries across Africa, Americas, Asia and Europe. Together with its partners, Lufthansa services around 410 destinations. With over 870 aircraft it has the largest passenger airline fleet in the world when combined with its subsidiaries.

Lufthansa's registered office and corporate headquarters are in Cologne, North Rhine-Westphalia, Germany. The main operations base, called Lufthansa Aviation Center (LAC), is located at Lufthansa's primary traffic hub at Frankfurt Airport. The majority of Lufthansa's pilots, ground staff, and flight attendants are based in Frankfurt.