Michael Friedrich Benedikt Baron von Melas (12 May 1729 – 31 May 1806) was a Transylvanian-born field marshal of Greek descent for the Austrian Empire during the Napoleonic Wars.
He was born in Radeln, Transylvania, Ottoman Empire (nowadays Roadeș, part of Bunești commune, Brașov County, Romania) in 1729 and joined the Austrian Army at age 17.
He served in the Seven Years' War as aide de camp for Leopold Josef Graf Daun.
Serving under Russian field marshal Alexander Suvorov, who commanded Second Coalition forces, he commanded Austrian forces in victories at the battles of Cassano, Trebbia, Novi, Genola, and the Siege of Genoa, and came near to another victory over Napoleon at the Battle of Marengo before making the mistake of handing over command to a subordinate for what he thought was the pursuit from the field of a beaten foe.
The day after the battle he was compelled to sign the Convention of Alessandria, which gave the rule of Italy up to the Mincio River to Napoleon, the Habsburg Crown's authority being in consequence forced out of Italy.