Wiesneck Castle (German: Burg Wiesneck) is a ruined castle in the village of Wiesneck in the municipality of Buchenbach in the Southern Black Forest in the county of Breisgau-Hochschwarzwald in the southwest German state of Baden-Württemberg.

The castle occupied a strategic site and guarded the road through the valley of the Wagensteigbach up to Thurner.

In 1096, someone was named after the castle for the first time when Count Adalberg of Haigerloch called himself von Haigerloch-Wiesneck.

During the Peasants' War, the castle was overrun by a Haufen of rebellious peasants under Hans von Bulgenbach and destroyed, but partially rebuilt soon afterwards.

During the Thirty Years' War, the castle was destroyed in 1646 by the French invaders.