Mari Jászai (born Mária Krippel; 24 February 1850, Ászár – 5 October 1926, Budapest) was a Hungarian actress.

She worked from age 10 as a maidservant, both in Budapest and Vienna, assisting soldiers as a sutling wench in the Battle of Königgrätz.

She met her first husband, comedian Vidor Kassai during her time in Buda, whom she divorced two years later, never marrying again.

A permanent member of the National Theatre since 1901, Mari Jászai became one of the most influential actors in the Hungarian theatrical world.

Playing over 300 roles, she also translated a number of works, including Henrik Ibsen's John Gabriel Borkman.