Marie Casimire Louise de La Grange d'Arquien (28 June 1641 – 30 January 1716) – known also by the diminutive form "Marysieńka", was a French noblewoman who became the queen consort of Poland and grand duchess consort of Lithuania and Ukraine from 1674 to 1696 by her marriage to King and Grand Duke John III Sobieski of the Polish–Lithuanian Commonwealth. She had great influence upon the affairs of state with the approval of her spouse, and acted in effect as regent during his absence.

Марія Казимира (1641 — 1716) — дружина короля Польщі, великого князя Литовського і Руського Яна ІІІ Собеського. Королева Польщі, великої Литви та України.