Magdalen Dacre, Viscountess Montagu (January 1538 – 8 April 1608) was an English noblewoman. She was the daughter of William Dacre, 3rd Baron Dacre of Gilsland, and the second wife of Anthony Browne, 1st Viscount Montagu. Magdalen, a fervent Roman Catholic, was a Maid of Honour at the wedding of Mary I of England to Philip II of Spain in Winchester Cathedral. Dacre, despite being a Catholic, managed to remain in high regard with the Protestant Tudor Queen who succeeded Mary, Elizabeth I.