Princess Malgorzata Izabella Maria Magdalene Antoinette Hyacinthe Josephe Luise Marie Czartoryska, Polish: Małgorzata Izabella Maria Magdalena Antonina Hiacynta Józefina Ludwika Czartoryska (17 August 1902, Warsaw, Kingdom of Poland – 8 March 1929, Cannes, French Republic) was a princess of the House of Czartoryski by birth.
Malgorzata Izabella was the eldest child of Prince Adam Ludwik Czartoryski and his wife Countess Maria Ludwika Krasińska.
Through her father, Malgorzata Izabella was a great-great-granddaughter of Louis-Philippe I, King of the French and Maria Amalia of the Two Sicilies.
Malgorzata Izabella's younger brother Prince Augustyn Józef Czartoryski married her niece, Princess Maria de los Dolores of Bourbon-Two Sicilies.
Malgorzata Izabella married Prince Gabriel of Bourbon-Two Sicilies, twelfth child and youngest son of Prince Alfonso of Bourbon-Two Sicilies, Count of Caserta and his wife Princess Antonietta of Bourbon-Two Sicilies, on 25 August 1927 in Paris.