|Manufacturer||Buick (General Motors)|
|Also called||Opel Insignia (Europe, 2008–present)|
Vauxhall Insignia (United Kingdom, 2008–present)
Holden Commodore (ZB) (Australia and New Zealand, 2018–present)
|Model years||North America|
|Body and chassis|
|Class||Mid-size car (D) (1973–1987, 2009–present)|
Mid-size luxury car (E) (1988–2004)
|Layout||FR layout (1973–1987)|
FF layout (1988–present)
F4 layout (2008–2020)
|Predecessor||Buick Skylark (1972)|
|Successor||Buick LaCrosse (for Regal, 1988–2004)|
The Buick Regal is an upscale mid-sized car that was first introduced by Buick for the 1973 model year. The model was originally positioned as a personal luxury car, and typically offered in both coupe and sedan forms until 1997, when the Regal became sedan-only due to the decline of the personal luxury coupe market. For certain model years between 1973 and 2004, the Regal shared bodies and powertrains with the similar Buick Century, although the Regal was positioned as a more upmarket vehicle.
The Regal was discontinued in the North American market in 2004, being succeeded by the Buick LaCrosse. In 2008, a new version of the Regal was introduced for the Chinese market, which is a badge engineered version of the Opel Insignia. The new Regal was introduced to the North American market in 2011, positioned as a mid-size vehicle. A new model was introduced for 2018, which is offered in a liftback sedan and a "TourX" station wagon version. GM discontinued the Regal in the North American market after the 2020 model year, making Buick exclusively a CUV marque there.