The younger son of Queen Margrethe II, he is fifth in the line of succession to the Danish throne, following the four children of his elder brother King Frederik X.

Prince Joachim attended school as a private pupil from 1974 until 1976 at Amalienborg Palace and then from 1976 until 1982 at Krebs' Skole in Copenhagen.

[3] Joachim and his first wife, now the Countess of Frederiksborg, received 13 million DKK collected by the people of Denmark as a national gift, reserved for restoration of the estate.

[11] Prince Joachim graduated on 26 June 2020, being the first Danish Officer to complete the two-part special education.

[citation needed] Earlier in June 2020, Minister of Defence Trine Bramsen promoted the Prince to Brigadier General due to his new acquired educational merits at École Militaire.

On 24 July 2020, while on holiday in Château de Cayx, Prince Joachim was admitted to Toulouse University Hospital for surgery on a blood clot in his brain.

[15] On 18 November 1995, at Frederiksborg Palace Church in Hillerød, near Copenhagen, Joachim married Alexandra Christina Manley, a Hong Kong-born former sales and marketing deputy chief executive of English, Chinese, and Austrian ancestry.

On 3 October 2007, the Danish court announced that Prince Joachim had become engaged to French native Marie Cavallier.

In the six-part series that he also co-produced, Joachim investigates the ideas and events that shaped Denmark's history.

[26] He participated in a classic-car race, part of the GTC-TC championship: he drove a BMW 2002, sharing the ride with Derek Bell.