Pjetër Mazreku (1584– 27 November 1634[1]) (Italian: Pietro Massarecchi, Latin: Petrus Massarecchius) was an Albanian prelate of the Roman Catholic Church.
He wrote documents on the state of Christians in the Ottoman Empire, and a short 33 word Albanian etymological dictionary, preserved as a manuscript.
Mazreku was born in Prizren, most likely in the village of Mazrek, into an Albanian family from the Mazreku tribe, which spoke in the Gheg dialect of Albanian.
He served as the Archbishop of Bar from 1624 to 1634, while in 1631 he became the apostolic visitor of Hungary, Serbia and Slavonia.
[4] His name was spelt in Latin and Italian as Mazzaretus, Massarechio, Maserecho, Masarecho, Masserecco, Massarecius, etc.