Ludwigsburg is a city in Baden-Württemberg, Germany, about 12 kilometres (7.5 mi) north of Stuttgart city centre, near the river Neckar. It is the largest and primary city of the Ludwigsburg district with about 88,000 inhabitants. It is situated within the Stuttgart Region, and the district is part of the administrative region (Regierungsbezirk) of Stuttgart.

The middle of Neckarland, where Ludwigsburg lies, was settled in the Stone and Bronze Ages. Numerous archaeological sites from the Hallstatt period remain in the city and surrounding area.

Towards the end of the 1st century, the area was occupied by the Romans. They pushed the Limes further to the east around 150 and controlled the region until 260, when the Alamanni occupied the Neckarland. Evidence of the Alamanni settlement can be found in grave sites in the city today.

The origins of Ludwigsburg date from the beginning of the 18th century (1718-1723) when the largest baroque castle in Germany, Ludwigsburg Palace was built by Duke Eberhard Ludwig von Württemberg. Originally, the Duke planned to just build one country home (albeit a palace), which he began building in 1704. However, the examples of other princes fostered a desire to project his absolutist power by establishing a city. To the baroque palace, he added a hunting lodge and country seat, called Schloss Favorite (1713-1728), and the Seeschloss (castle on the lake) Monrepos (1764-1768).

A settlement began near the palace in 1709 and a town charter was granted on 3 April 1718. That same year, Ludwigsburg became a bailiff's seat, which eventually became the rural district of Ludwigsburg in 1938.

In the years between 1730 and 1800, the royal seat of residence changed back and forth several times between Stuttgart and Ludwigsburg. In 1800, Württemberg was occupied by France under Napoleon Bonaparte and was forced into an alliance. In 1806, the Kurfürst (Prince-Elector) Friedrich was made king of Württemberg by Napoleon. In 1812, the Württembergish army was raised in Ludwigsburg for Napoleon's Russian campaign. Of the 15,800 Württemberg soldiers who served, just a few hundred returned.

In 1921, Ludwigsburg became the largest garrison in southwest Germany. In 1945, Ludwigsburg was made a "Kreisstadt" (urban district), and later, when the Baden-Württemberg municipal code took effect on 1 April 1956, the city was named a major urban district. In 1956 the tradition of the German garrison town was taken up again by the Bundeswehr, Germany's federal armed forces.

2004 was the 300th birthday of Residenzschloss Ludwigsburg, celebrated by the opening of the Baroque Gallery and the Ceramic Museum in the Residenzschloss.