Louis II              26 Jun 1922 -  9 May 1949 (†1949)     
Rainier III            9 May 1949 -  6 Apr 2005 (†2005)     
Albert II              6 Apr 2005 -                     (De facto regent for Rainier III from 31 Mar 2005)

Pierre de Witasse     13 Oct 1944 - 31 Dec 1948 (†1956) 
Pierre Blanchy         4 Jan 1949 - 12 Jul 1949 (†1981) (acting)
Jacques Léon Rueff    12 Jul 1949 -  1 Aug 1950 (†1978) 
Pierre Voizard         1 Aug 1950 -  2 Sep 1953 (†1982) 
Henry Soum            15 Nov 1953 - 31 Dec 1958 (†1983) 
Pierre Blanchy         1 Jan 1959 - 12 Feb 1959 (†1981) (acting)
Émile Pelletier       12 Feb 1959 - 23 Jan 1962 (†1975) 
Pierre Blanchy        23 Jan 1962 - 16 Aug 1963 (†1981) (acting)
Jean Reymond          16 Aug 1963 - 28 Dec 1966 (†1986)
Paul Demange          28 Dec 1966 -  1 Apr 1969 (†1970) 
François-Didier Gregh  1 Apr 1969 - 24 May 1972 (†1992) 
André Saint-Mleux     24 May 1972 - 13 Jul 1981 (†2012)
Jean Herly            13 Jul 1981 - 16 Sep 1985 (†1998)
Jean Ausseil          16 Sep 1985 - 16 Feb 1991 (†2001) 
Jacques Dupont        16 Feb 1991 -  2 Dec 1994 (†2002)  
Paul Dijoud            2 Dec 1994 -  3 Feb 1997                                  
Michel Lévêque         3 Feb 1997 -  1 Jan 2000                 
Patrick Leclercq       1 Jan 2000 -  1 Jun 2005             
Jean-Paul Proust       1 Jun 2005 - 29 Mar 2010 (†2010) 
Michel Roger          29 Mar 2010 -  1 Feb 2016         
 Gilles Tonelli       16 Dec 2015 -  1 Feb 2016         (acting for Roger)
Serge Telle            1 Feb 2016 -  1 Sep 2020
Pierre Dartout         1 Sep 2020 -