The wedding of Harald, Crown Prince of Norway, and Sonja Haraldsen took place on Thursday, 29 August 1968, at Oslo Cathedral.

The wedding was the culmination of a nine-year courtship as King Olav V, Harald's father, was reluctant to permit his son and heir to marry a commoner.

Crown Prince Harald, the only son and heir of King Olav V of Norway, first met Sonja Haraldsen, the youngest child of Norwegian manufacturer Karl August Haraldsen (1889–1959) and Dagny Ulrichsen (1898–1994), in June 1959 at a party hosted by their mutual friend Johan Stenersen.

At the time, Harald was the only person in the line of succession to the Norwegian throne, and his not marrying would have ended the reign of his family, and possibly the monarchy, in Norway.

[3] Harald presented Sonja with a diamond and ruby ring which had belonged to his late mother, Crown Princess Märtha.

A grand ball at the Royal Palace had been planned but was canceled due to the Soviet invasion of Czechoslovakia and the recent sudden death of Princess Marina, Duchess of Kent.

[5] On 28 August, the couple and royal guests attended a modern art exhibition at the Henie Onstad Kunstsenter.

Norwegian soprano Aase Nordmo Løvberg sang Alt står i Guds faderhånd (Everything rests in God the Father's hand) by N. F. S. Grundtvig.

At 19:00 local time, King Olav V hosted a banquet for 225 guests in the palace's grand dining room.

The King, Crown Prince Harald and Bernt Ingvaldsen, President of the Storting, all gave speeches.