The Alfa Romeo 159 is a car built by Italian marque Alfa Romeo between 2004 and 2011. It is a large family car in the compact-executive market segment with four-door saloon and five-door estate variants. Introduced at the 2005 Geneva Motor Show, as a replacement for the 156, the 159 used the GM/Fiat Premium platform, shared with the Alfa Romeo Brera and Spider as well as the Kamal and Visconti concept cars.

Alfa Romeo Automobiles S.p.A. is an Italian luxury car manufacturer and a subsidiary of Stellantis Europe. It was founded on 24 June 1910 in Milan, Italy, as A.L.F.A., an acronym for Anonima Lombarda Fabbrica Automobili. The brand is known for sport-oriented vehicles and has been involved in car racing since 1911. As of 2023 it is a subsidiary of the multinational automotive manufacturing corporation Stellantis.