Amedeo Cognengo di Castellamonte (1618 – 17 September 1683) was an Italian architect, civil and military engineer.
In 1646 he continued works at the Ducal (now Royal) Palace in Turin, finishing (1658) the facade and the central body flanked by two raised ones, and the relative connection with the castle square.
In the same streets, he added porticoes and terraces forming an uninterrupted, 1,250 m-long path from the Royal Palace to the Po.
Castellamonte was also entrusted the works of the Reggia di Venaria (Charles Emmanuel's II new large hunting residence, begun in 1658) and the Cavallerizza Reale (Royal Stables), built from the late 17th century and continued, among the others, by Filippo Juvarra and Benedetto Alfieri.
He also built numerous fortifications and stage-settings for court celebrations, and worked in private noble palaces such as Palazzo Lascaris.