Winnenden (Swabian: Wẽnnede) is a small town in the Rems-Murr district of the Stuttgart Region in Baden-Württemberg in southwest Germany.

The earliest record of Winnenden is found in a document of 1181 where Gottfried of Schauenburg-Winnenden is mentioned as a witness testifying that Emperor Friedrich I held the castle in the town.

During the Thirty Years' War the city was pillaged twice, in 1638 and 1643, and Imperial, French, and Swedish troops occasionally occupied Winnenden during this conflict.

The following parties constitute the city council according to the 2004 municipal elections: the CDU (10 seats), voter Free Association (8), SPD (5), and Green Alternative List (3) On 11 March 2009, the town made international headlines following a school shooting at the Albertville-Realschule, one of Winnenden's secondary schools.

The shooting resulted in the deaths of twelve people, and the attacker committed suicide at Wendlingen after killing three civilians.