Mary I of Scotland, (1542–1587, also known as Mary, Queen of Scots), queen regnant of Scotland and queen consort of France, was the daughter of James V of Scotland, the wife of Francis II of France and the mother of James I of England

Mary I of England (1516–1558), queen regnant of England, was the daughter of Henry VIII of England (by his first wife Catherine of Aragon), and the second wife of Philip II of Spain.

Mary of Teck (1867–1953), queen consort of the United Kingdom, was the wife of George V of the United Kingdom, and the mother of Edward VIII of the United Kingdom and George VI of the United Kingdom

RMS Queen Mary 2, a Cunard passenger ship that entered service in 2003

Mary II of England (1662–1694), queen regnant of England, was the daughter of James II of England, the wife of William III of England, and the sister of Anne I of the United Kingdom

Queen Mary, University of London, a college of the University of London

Queen Mary is the most common historical title of Mary Thomas, leader of the Fireburn labor revolt in Saint Croix, U.S. Virgin Islands

Marie of Edinburgh, Queen of Romania (1875–1938), queen consort of Romania, was the daughter of Alfred, Duke of Saxe-Coburg and Gotha; the wife of Ferdinand I of Romania; and the mother of Carol II of Romania

Maria II of Portugal (1819–1853) was also known as Mary II, the Good Mother

Mary Tudor (queen consort of France) (1495–1533) was the daughter of Henry VII of England, the sister of Henry VIII of England, the wife of Louis XII of France, and the grandmother of Lady Jane Grey

Mary of Modena (1658–1718), queen consort of England, was the daughter of Alfonso IV (Duke of Modena), and the second wife of James II of England

Maria I of Portugal (1734–1816) was also known as Mary I, the Pious

Mary of Guise (1515–1560), queen consort and regent of Scotland, was the daughter of Claude, Duke of Guise; second wife of James V of Scotland; and the mother of Mary, Queen of Scots

Mary of Hungary (1371–1395), queen regnant of Hungary, was the daughter of Louis I of Hungary and the wife of Sigismund, Holy Roman Emperor

TS Queen Mary, a Clyde Steamer launched in 1933, now retired as a floating pub/restaurant on the Embankment in London, UK

HMS Queen Mary, a battlecruiser of the Royal Navy launched in 1912

Mary of Habsburg (1505–1558), queen consort of Hungary, was the daughter of Philip I of Castile, and the wife of Louis II of Hungary and Bohemia

Mary of Gueldres (1433–1463), queen consort of Scotland, was the daughter of Arnold von Geldern, Duke of Gueldres (in Burgundy, France); the wife of James II of Scotland; and the mother of James III of Scotland

RMS Queen Mary, a Cunard Line ocean liner launched in 1934, now retired as a hotel in Long Beach, USA.