Princess Izabela Maria Sanguszko (née Princess Izabela Maria Lubomirska), in Polish Izabela Maria z książąt Lubomirskich księżna Sanguszkowa (1 March 1808 – 18 March 1868) was a Polish noble lady.

Princess Izabela Maria was born to Prince Henryk Ludwik Lubomirski (15 September 1777 – 20 October 1850) and Princess Teresa Czartoryska (30 July 1785 – 31 December 1868). Through her father she was great-granddaughter of Prince Stanisław Lubomirski and through her mother she was granddaughter of Prince Józef Klemens Czartoryski. She had two sisters: Dorota and Jadwiga Julia (she married Eugène, 8th Prince of Ligne) and brother Jerzy Henryk.

On 6 July 1829, in Przeworsk she married Prince Władysław Hieronim Sanguszko. They had five children:

• Jadwiga Klementyna Sanguszko (1830–1918) – she married Prince Adam Stanisław Sapieha
• Roman Damian Sanguszko (1832–1917) – he married Countess Karolina of Thun and Hohenstein, great-granddaughter of Count Alois Friedrich von Brühl
• Pawel Roman Sanguszko (1834–1876) – he married firstly Countess Marie Gfn von der Borch-Warkland and secondly Georgina Apponyi de Nagy-Appony
• Helena Sanguszko (1836–1891)
• Eustachy Stanisław Sanguszko (1842–1903) – he married Countess Konstancja Anna Zamoyska

She died in 1868.

Famous descendants

She is Prince Władysław Leon Sapieha's maternal grandmother. Prince Władysław Leon is himself Princess Zofia Sapieha's paternal grandfather. And Princess Zofia is Princess Mathilde, Duchess of Brabant's maternal grandmother.

So Princess Izabela Maria Lubomirska is a 6th-generation ancestor of Belgian heir apparent's wife Princess Mathilde, Duchess of Brabant.