Two thousand people will be in attendance and news and rumours about which members of his close and extended family will be there are ramping up in the weeks leading up to the event.
So, what do we know so far about which royals will be there, and what their roles in the ceremony are expected to be?
It was reported last week that Prince Harry and Meghan Markle have been invited to the historical event but the couple has not yet revealed whether they will attend.
We do know, however, that their children, Prince Archie and Princess Lilibet, are very unlikely to be there as aged just four and one on the big day, they’ll be too young.
In addition, the day marks Archie’s fourth birthday, so he may well be celebrating! Some royal children will be in attendance, however, as Prince George is expected to play a role in the coronation, which marks a big difference from the Queen’s coronation, as then-Prince Charles simply watched.
According to the royal editor of The Sunday Times, Roya Nikkhah, the young heir will have a “significant” role, although the details are not yet clear.
His younger siblings, Princess Charlotte, who will be eight at the time, and Prince Louis, four, maybe spectators but will not take part in the ceremony.
The monarch is also a doting step-grandfather to the Queen Consort’s five teenage grandchildren, who will not only attend but reportedly take part in the ceremony.
Camilla’s son, Tom Parker Bowles, has Lola, 15, and Freddy, 13, while her daughter, Laura Lopes, is mum to Eliza, 15, and 13-year-old twins, Louis and Gus.
Princess Diana’s brother Charles Spencer was among the first to reveal that he had no plans to attend the event, commenting on the Times Radio podcast Off Air that he doesn’t expect to receive an invitation.