Château de Montmelas, Medieval castle and winery in Montmelas-Saint-Sorlin, France

Château de Montmelas is a castle and winery in Montmelas-Saint-Sorlin, France. Its oldest surviving part is a cylindrical keep rising above a quadrangular walled enclosure with corner turrets, a large lower courtyard and a French formal garden. The complex was rebuilt in the 13th or 14th century and restored in neo-Gothic style after 1828 by Lyon architect Louis Dupasquier.

A castle is mentioned at Montmelas from 977, and in the 11th century the stronghold belonged to the sires de Beaujeu. Jean Arod bought it at auction in 1566; in 1593 he was killed repelling an attack on his castle. The Arod family held it for generations, and in 1766 Blaise Arod, marquis de Montmelas, married Marguerite-Catherine Haynault, mistress of Louis XV, who lived at Montmelas until her death in 1823. The estate belongs today to the d'Harcourt family.

The name Montmelas comes from the Latin mons malatus, "mountain loaded with fruit", from malum, apple, and fruits of similar shape. The estate is a working wine domaine, and the cuvage, the building where grapes were pressed, is listed with the castle as a monument historique since 29 June 2000.

The castle is a private estate opened to visitors; the grounds, French formal garden, chapel and cuvage are covered by the monument historique listing of 29 June 2000. The site stands on a promontory above Montmelas-Saint-Sorlin, with a view reaching Mont Blanc on clear days. The outer wall is crenellated and the lower terraces are reached by the curving stone retaining wall.

The name Montmelas comes from the Latin mons malatus, "mountain laden with fruit", from malum, apple, and fruits of similar shape such as peaches, quinces and pomegranates. The castle stands on a promontory in Montmelas-Saint-Sorlin and Saint-Julien from which the view reaches as far as Mont Blanc.