Nikolai was baptised in the chapel of the Fredensborg Palace on 6 November 1999 by the Danish Chaplain-in-Ordinary, Christian Thodberg.

At the christening, the musical work Lys på din vej, composed by Frederik Magle and dedicated to the prince, was performed for the first time.

[2] His godparents are his paternal uncle King Frederik X, his maternal aunt Nicola Baird, Prince Edward, Duke of Edinburgh, Peter Steenstrup and Camilla Flint.

[19] Subsequently, in May he also signed with Barcelona-based modeling agency Sight Management Studio as 'Count Nikolai of Monpezat'.

[20] In June 2024, Nikolai graduated from Copenhagen Business School with a Master of Science in Merchandising degree (cand.merc.)

[22] In September 2022, Queen Margrethe II decided to strip the children of her son Joachim from the princely status they held since their births.