Maciej Kamienski (13 October 1734, Sopron – 25 January 1825, Warsaw) was Polish classical composer of Slovak origin.
He studied music in Sopronm, where his patron was Count Henckl von Donnersmarck.
After his death (1760), Kamienski moved to Vienna to continue his education.
There in 1762, he heard young Mozart play.
He visited Warsaw for the first time in 1773: this year the publishing house of J.
Engel issued some harpsichord works by Kamienski (today lost).
He gave piano and singing lessons, held an inn in Warsaw (on Swietojerska street) and organized public concerts at Dulfowski manor house.