The Royal Sardinian Army (also the Sardinian Army, the Royal Sardo-Piedmontese Army, the Savoyard Army, or the Piedmontese Army) was the army of the Duchy of Savoy and then of the Kingdom of Sardinia, which was active from 1416 until it became the Royal Italian Army on 4 May 1861.

Generally, the term "Savoyard Army" is used for the period when the rulers of Savoy held only