Regina Wisniowiecka (, ), also known as Regina Mohilianka or Raina Mohylianka (, 1589-1619) was a Polish noble lady of Moldavian origin. She was a wife of Michaà  Wià Âniowiecki and patron of Eastern Orthodox Christianity in the PolishâÂÂLithuanian Commonwealth.
She was a daughter of Moldavian hospodar Ieremia MovilÃÂ and his wife Elisabeta MovilÃÂ, and a cousin of Metropolitan of Kiev Peter Mohyla. Due to the conflict with Michael the Brave, 1600 Ieremia was forced to move his family to the Galician town of Ustia (now the village of Ustia-Zelene in Chortkiv Raion).
In 1603, at the age of 14, Regina married Polish-Ruthenian magnate Michaà  Wià Âniowiecki in the city of Suceava, Moldavia.
She was a philanthropist and supported a number of monasteries in Ukrainian lands, including the convents in Pryluky, Hustyn, Ladan and Mhar Monastery near Lubny.
Regina was married only to Michaà  Wià Âniowiecki and had at least four children with him.