Princess Marcelina Czartoryska, née Radziwiłł (18 May 1817 in Podłużne − 5 June 1894 in Kraków) was a prominent Polish aristocrat and pianist.
She was taught piano by Carl Czerny in Vienna and by Frédéric Chopin in Paris.
She gave concerts across Europe, often with prominent musicians such as Franz Liszt, Pauline Viardot and Henri Vieuxtemps.
In Paris she became a prominent guest at the Hôtel Lambert, bought by Prince Adam Jerzy Czartoryski, a close relative of her husband Aleksander.
From 1870 she lived in Kraków, where she gave mainly private concerts and, thanks to her artistic connections, contributed to founding a Conservatory in 1888.