Marcello Bacciarelli (Italian pronunciation: [marˈtʃɛllo battʃaˈrɛlli]; 16 February 1731 – 5 January 1818) was an Italian-born painter of the late-baroque and Neoclassic periods active in Poland and the Polish–Lithuanian Commonwealth.

In 1750, with the recommendation of the architect Gaetano Chiaveri, Marcello was recruited to Dresden in Saxony, where he was employed by Elected King Augustus III of Poland.

He was recruited by King Stanisław II Augustus in 1766 to become the Director of the newly founded Royal Buildings and Estates.

Following the partitions of Poland and after Napoleon's rise to power he moved to the Duchy of Warsaw, a client state of the First French Empire and died in 1818.

These include: During Bacciarelli's early years in Warsaw, the young Alexander Kucharsky began to train as a painter in his studio.