| Consort: | yes |
| Maria Buynosova-Rostovskaya | |
| Succession: | Tsaritsa of All Russia |
| Reign: | 1608–1610 |
| Spouse: | Vasili IV of Russia |
| Issue: | Tsarevna Anna VasilievnaTsarevna Anastasia Vasilievna |
| Father: | Prince Peter Ivanovich Buynosov-Rostovskay |
| Mother: | Maria Ivanovna |
| Birth Date: | 1590s/c. 1586 |
| Death Date: | 2 January 1626 |
| Death Place: | Novodevichy Convent |
| Burial Place: | Archangel Cathedral, Kremlin; prev. Novodevichy Convent |
| Religion: | Eastern Orthodox |
Maria Petrovna Buynosova-Rostovskaya (Буйносова-Ростовская, Мария Петровна in Russian) (born as Catherine - died 2 January 1626) was the second spouse and only tsarina consort of Tsar Vasili IV of Russia.
Maria Buynosova-Rostovskaya was the daughter of prince Piotr Buynosov-Rostovskiy, and related to the Nagoi family.[1] The wedding to Vasili IV took place on 17 January, 1608.
She and Vasili had two children, Anna and Anastasia, however both died while still infants. [2]
In 1610, Vasili - a boyar who had overthrown the previous claimant to the throne, the 'false Dimitri' - was deposed.[3] After the deposition of her consort, Maria was forced to enter a convent, Novodevichy.[4] As a nun, she took the name Elena. Her youngest daughter, by then newborn, joined her and became a nun when adult.
Maria died at the Pokrovski, convent in 1625.
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