Peter III Aaron (Romanian:Petru Aron; died 1467),bastard son ofAlexandru cel Bun, was aVoivode (Prince) ofMoldavia on three occasions: October 1451 to February 1452, August 1454 to February 1455, and May 1455 to April 1457. The first two were during a civil war withAlexăndrel.

Peter Aaron Petru Aron
Prince of Moldavia (1st reign)
Reign	October 1451 – February 1452
Predecessor	Bogdan II of Moldavia
Successor	Alexăndrel of Moldavia
Prince of Moldavia (2nd reign)
Reign	August 1454 – February 1455
Predecessor	Alexăndrel of Moldavia
Successor	Alexăndrel of Moldavia
Prince of Moldavia (3rd reign)
Reign	May 1455 – April 1457
Predecessor	Alexăndrel of Moldavia
Successor	Stephen III of Moldavia
Born	1419/1421
Died	1467
Dynasty	Bogdan-Mușat
Father	Alexandru cel Bun
Religion	Orthodox

Peter Aaron ascended to the throne after assassinatingBogdan II, while the latter was at a wedding inRauseni. Immediately, his rule was challenged by Alexăndrel, whom Peter managed to defeat in March 1455, forcing Alexăndrel to take refuge in the fortress atCetatea Albă.

Peter confirmed his father's commercial privileges awarded toPolish traders in Moldavia, and took an oath ofvassalage toKingCasimir IV. In 1456, Peter agreed to pay theOttomans atribute of 2,000gold ducats, in order to ensure his southern borders, thus becoming the first of the Moldavian rulers to accept the Turkish demands.

The real challenge to his throne came with Bogdan II's sonŞtefan cel Mare. The young prince had been given the protection ofKingdom of Hungary captain-generalJohn Hunyadi and, after John's death, that ofVlad III Dracula (Vlad Ţepeş) - the newPrince ofWallachia. According to the interpretation of the account in theChronicle of Putna [ro] Vlad had offered Ştefan his full support for his venture. In April 1457, after two battles, Peter was deposed and had to flee, taking refuge first in Poland and then inSzékelyföld. There, he played a part in increasing the tensions between Ştefan cel Mare andKingMatthias Corvinus. Following Matthias's incursion and subsequent defeat at theBattle of Baia (15 December 1467), Peter was captured and executed.

Peter Aaron issued newbillon andcoppercurrency - on thegrosh design but struck in bettersilver, probably as a part of a reform inmonetary standards.^[1]

• Brezianu, Andrei and Spânu, Vlad (eds.) (2007) "Petru Aron (?-1469)"Historical Dictionary of Moldova (2nd ed.) Scarecrow Press, Lanham, Maryland, USA, p. 284,ISBN 978-0-8108-5607-3

• Marek, Miroslav."Muşatin family". Genealogy.EU.
• Coins of Peter Aaron's mint