The coronation of Mary I as Queen of England and Ireland took place at Westminster Abbey, London, on Sunday 1 October 1553. This was the first coronation of a queen regnant in England, a female ruler in her own right. The ceremony was therefore transformed. Ritual and costume were interlinked. Contemporary records insist the proceedings were performed "according to the precedents", but mostly these were provisions made previously for queens consort.

Mary I, also known as Mary Tudor, and as "Bloody Mary" by her Protestant opponents, was Queen of England and Ireland from July 1553 and Queen of Spain and the Habsburg dominions as the wife of King Philip II from January 1556 until her death in 1558. She is best known for her vigorous attempt to reverse the English Reformation, which had begun during the reign of her father, King Henry VIII. Her attempt to restore to the Church the property confiscated in the previous two reigns was largely thwarted by Parliament, but during her five-year reign, Mary had over 280 religious dissenters burned at the stake in the Marian persecutions.