Prince Harry and Meghan Markle marry at St George's Chapel, Windsor

Prince Harry, the younger son of Charles, then Prince of Wales, married American actress Meghan Markle on 19 May 2018 at St George's Chapel, Windsor Castle. The service was watched by crowds in Windsor and by a large television audience around the world. Afterwards the couple were given the titles Duke and Duchess of Sussex by Queen Elizabeth II.

Meghan's father, Thomas Markle, did not attend. Days before the wedding he said he would not travel because of ill health, after reports that he had staged paparazzi photographs ahead of the day. Meghan's mother, Doria Ragland, was present, and it was Prince Charles who accompanied the bride along part of the aisle.

The wedding was seen as a significant moment for the monarchy, bringing in a mixed-race American bride and a service that included a gospel choir and a sermon by US Episcopal bishop Michael Curry. The absence of Thomas Markle also marked the start of a lasting estrangement that later played out publicly in the press and in court.