Maria Wojciechowska, née Kiersnowska (15 December 1869 – 14 September 1959), was the First Lady of Poland from 1922 to 1926 as the wife of President Stanisław Wojciechowski.

Her paternal grandfather, Jan Kiersnowski was sent to Siberia for participating in the November uprising, and her maternal uncle, Stanisław Iszora, a priest and vicar from Żołudek (now Belarus) was shot on 22 May 1863, in Vilnius on Łukiszki Square for reading the manifesto of the National Government from the pulpit and urging parishioners to participate in the uprising, becoming the first victim of Murawiow's terror.

She graduated from the Mariinsky Institute in Vilnius, the highest education available to women at that time, she was a friend of Józef Piłsudski from school.

Following the assassination of President Narutowicz by the ultra-nationalist painter Eligiusz Niewiadomski on 16 December 1922, the candidacy waiver Piłsudski, who did not want to be blocked in a "gilded cage" according to his own words, Wojciechowski was, by the National Assembly on the recommendation of Sejm marshal Maciej Rataj with the votes of the Left and the Centre on the first ballot, elected head of state, which made Maria the First Lady of Poland.

After the May Coup, her husband was forced, along with the Polish Prime Minister Wincenty Witos, to resign as President and leave Belvedere Palace.