Leonberg (ˈleːɔnˌbɛrk; Leaberg) is a town in the German federal state of Baden-Württemberg about to the west of Stuttgart, the state capital. About 45,000 people live in Leonberg, making it the third-largest borough in the rural district (Landkreis) of Böblingen (after Sindelfingen and Böblingen to the south).
Leonberg is most famous for its picturesque market square, the centuries-old annual horse market, its past role as the seat of one of Württemberg's first parliaments, and the Pomeranzen Garden – Germany's only remaining terraced garden which dates back to the late Renaissance.
Leonberg lies on the east bank of the Glems River on the lower slopes of a prominent hill known locally as Engelberg (literally: "Angel Hill"). The Glems flows into Leonberg from the southeast before turning northwest until it reaches the district of Eltingen. Here, it turns northeast into the western part of the old town, carving its way along the valley to the district of Höfingen before flowing northeast towards Ditzingen. For administrative purposes, the northern districts of Höfingen and Gebersheim belong to Strohgäu.
Leonberg is surrounded by these communities (clockwise, starting from the north):
Ditzingen and Gerlingen (districts of Ludwigsburg), Stuttgart, and then the Böblingen rural districts of Magstadt, Renningen, and Rutesheim.
Leonberg merged with the neighbouring town of Eltingen in 1938, which now flows seamlessly into the former old town. Administrative reforms in 1975 also resulted in the districts of Gebersheim, Höfingen, and Warmbronn becoming part of Leonberg. Central Leonberg encompasses Silberberg, Ramtel, Gartenstadt, and the residential neighbourhoods of Eichenhof, Glemseck, Hinter Ehrenberg, Mahdental, and Rappenhof. The district of Höfingen also includes the residential neighbourhoods of Tilgshäusleshof and Wannenhof.
Although incorporated into Leonberg in 1975, Gebersheim, Höfingen, and Warmbronn also count as separate constituencies in local elections.