Global Royals
First foreign royals to confirm attendance, with the coronation taking place just a few weeks after the head of the Grimaldi family turned 65.
Prince Albert and Princess Charlene, Monaco
Charles was in attendance at the enthronement ceremony of Akishino's father Emperor Naruhito in 2019.
Crown Prince Akishino and Crown Princess Kiko, Japan
Monarch Queen Margrethe is recuperating from back surgery so is sending a proxy.
Crown Prince Frederik and Crown Princess Mary, Denmark
The Swedish monarch will not be joined by wife Queen Silvia but his eldest daughter instead.
King Carl XVI Gustav and Crown Princess Victoria, Sweden
The royal couple also attended the funeral of Queen Elizabeth II.
King Felipe and Queen Letizia, Spain
The Crown Prince is heir to the Norwegian throne despite having an older sister.
Crown Prince Haakon and Crown Princess Mette-Marit, Norway
Coronation comes after Maria Teresa faced staff bullying accusations earlier this year.
Grand Duke Henri and Grand Duchess Maria Teresa, Luxembourg
King Charles is godfather to Crown Prince Pavlos and is greatly enamoured of his father's country of birth.
Queen Anne-Marie, Crown Prince Pavlos and Crown Princess Marie-Chantal, Greece
King and Queen of Belgium are close to King Charles III and their attendance breaks with Belgian tradition.
King Philippe and Queen Mathilde, Belgium
Margareta's claim to the throne is not recognised by the Romanian parliament.
Margareta of Romania
Willem-Alexander became king after his mother Beatrix abdicated in 2013.
King Willem-Alexander and Queen Maxima, The Netherlands
King Charles is godfather to Crown Prince Pavlos and is greatly enamoured of his father's country of birth.
Queen Anne-Marie, Crown Prince Pavlos and Crown Princess Marie-Chantal, Greece
King and Queen of Belgium are close to King Charles III and their attendance breaks with Belgian tradition.
King Philippe and Queen Mathilde, Belgium
Margareta's claim to the throne is not recognised by the Romanian parliament.
Margareta of Romania
Willem-Alexander became king after his mother Beatrix abdicated in 2013.
King Willem-Alexander and Queen Maxima, The Netherlands