Czeslaw Kozon was born in Idestrup, Falster, Denmark, on 17 November 1951 to parents who were emigres from Communist Poland.

He was ordained a priest for the Diocese of Copenhagen on 6 January 1979 by Bishop Hans Ludvig Martensen.

He served briefly as assistant priest at St. Ansgar's in Copenhagen and then in other parishes until he was appointed vicar general of the diocese in 1994.

[1] On 22 March 1995, Pope John Paul II appointed him Bishop of Copenhagen.

[3] On 22 March 2023, he was elected one of the vice presidents of the Commission of the Bishops' Conferences of the European Union (COMECE).