Amadeus II (c. 1050 – 26 January 1080) was the Count of Savoy from 1078 to 1080. His life is obscure and few documents mention him. During his reign he was overshadowed by his mother, but he had good relations with the Papacy and, for a time, the Holy Roman Emperor.
The second son of Otto, Count of Savoy, and Adelaide, Margravine of Turin, Amadeus II was probably born around 1050, because he, alongside other noblemen of the Kingdom of Burgundy, swore an oath on the tomb of Saint Peter in Rome to defend the Church around 1070–73. In 1074 Pope Gregory VII was trying to persuade William I, Count of Burgundy, to remember this vow and, with Amadeus and others, go to the defence of the Roman Empire in the East against the Seljuk Turks. As his mother is known to have had good relations with the Papacy in these years, this record seems to indicate that Amadeus was following his mother's policies at this early stage in his career.
Early in 1077 Amadeus, with his mother and brother Peter, then Count of Savoy, hosted his sister Bertha, and his brother-in-law, Bertha's husband, the Emperor Henry IV. Amadeus and Adelaide then escorted the imperial couple to Canossa so the excommunicated emperor could reconcile with the pope. There they both took part in the negotiations and stood as pledges for the emperor's good faith.
On 16 July 1078 Amadeus and Peter witnessed a donation of their mother's to the Abbey of Novalesa. It was the last act of Amadeus and Peter together.