Wolfsburg (German: [ˈvɔlfsbʊʁk] ^ⓘ; Eastphalian: Wulfsborg) is the fifth-largest city in the German state of Lower Saxony, on the river Aller 75 kilometres (47 mi) east of Hanover and 230 kilometres (143 mi) west of Berlin.

Wolfsburg is famous as the location of Volkswagen AG's headquarters and, until it was overtaken by Tesla Gigafactory Texas in 2022, the world's biggest car plant. The Autostadt is a visitor attraction next to the Volkswagen factory that features the company's model range: Audi, Bentley, Bugatti, Ducati, Lamborghini, MAN, Neoplan, Porsche, Scania, SEAT, Škoda Auto and Volkswagen Commercial Vehicles. Wolfsburg is one of the few German cities built during the first half of the 20th century as a planned city. From its founding on 1 July 1938 as a home for workers producing the KdF-Wagen until 25 May 1945, the city was called Stadt des KdF-Wagens bei Fallersleben. In 1972, the population first exceeded 100,000. In 2019, the GRP was €188,453 per capita.

The "Wolfsburg" Castle was first mentioned in 1302 in a document as the domicile of the noble lineage of Bartensleben. Originally a keep next to the Aller, it was protected by a moat some centuries later. In 1372, the first documentary reference to the Burg Neuhaus ("castle of Neuhaus") near Wolfsburg appeared. After the extinction of the Bartensleben line in 1742, the property and its Schloss Wolfsburg (Wolfsburg castle) passed on to the Counts of Schulenburg. The communal manor was an important employer for the nearby settlements Rothenfelde and Heßlingen.

Some of today's urban districts, including Vorsfelde and the villages transferred to Wolfsburg from the county of Helmstedt, belonged to the Principality of Brunswick-Wolfenbüttel. Fallersleben and other villages belonged to the Electorate of Braunschweig-Lüneburg, which later developed into the Kingdom of Hanover and became a Prussian province in 1866. Other urban districts, including Heßlingen, belonged to the Prussian Duchy of Magdeburg. In 1932, these districts were detached from the Prussian Province of Saxony and integrated into the Province of Hanover.

Wolfsburg was founded on 1 July 1938 as the Stadt des KdF-Wagens bei Fallersleben, ("City of the Strength Through Joy car at Fallersleben), a planned town centred around the village of Fallersleben, built to house workers of the Volkswagen factories erected to assemble what would be later known as the Volkswagen Beetle. During World War II, military cars, aeroplanes, and other military equipment were built there, mainly by forced workers and prisoners-of-war.^{[citation needed]} In 1942, German authorities established the Arbeitsdorf concentration camp in the city for a few months. At least six individuals died while working at this camp.

The city and Volkswagen factory were captured on 11 April 1945, by US troops, and about 7,700 forced labourers were liberated from the Volkswagen factory. The US troops occupied the city until the end of June, during which time the city was renamed Wolfsburg on 25 May 1945, after the eponymous castle located there. The American occupation ended at the end of June 1945 when the region became part of the British occupation zone. In 1951, Wolfsburg was separated from the District of Gifhorn, and became an urban district.

In 1955, the one-millionth VW Beetle was manufactured in Wolfsburg. Postwar Beetle production ended in Wolfsburg in 1974, though Beetle production continued within Germany at Emden until 1978. The factories in Wolfsburg remain a key part of Volkswagen's production capacity.

During the German economic miracle Wolfsburg experienced a large influx of immigrant workers, especially from Italy.