Prime Ministers of Slovakia

Chairman/President of the Provisional Government for Slovakia (1918; within Czechoslovakia)
Vavro Šrobár (4 November 1918 – 14 November 1918) – ceased with the adoption of the Czechoslovak constitution

Chairman of the Revolutionary Governing Council of the Slovak Soviet Republic (1919; in rebellion in eastern Slovakia)
Antonín Janoušek (20 June 1919 – 7 July 1919)

Land President of Slovakia (1928 – 1939; within Czechoslovakia)
Note: Despite their "robust" title, these were only the highest administrative officers responsible for Slovakia. They are given here just for completeness’ sake.

Ján Drobný (1 July 1928 - 1929)
Jozef Országh (1929 - 1938)
Julián Šimko (1938 - 1939)

Prime Minister of autonomous Slovakia (1938 – 1939; within Czechoslovakia)
Jozef Tiso (7 October 1938 – 9 March 1939)
Jozef Sivák (9 March 1939 – 11 March 1939)
Karol Sidor (11 March 1939 – 14 March 1939)

Prime Minister of Slovakia (1939-1945; independent Slovakia)
Jozef Tiso (14 March 1939 – 17 October 1939)
Vojtech Tuka (27 October 1939 – 5 September 1944)
Štefan Tiso (5 September 1944 – 4 April 1945)

Chairman/President of the „Zbor povereníkov“ [appr. Board of Commissioners] (1944; in rebellion within Slovakia)
Presidium of the Slovak National Council (1 September 1944 – 23 October 1944)

Delegation of the Slovak National Council for the Liberated Territories ( till December 1944 in exile, then on the liberated territories of Slovakia)
no particular leader / Presidium of the Slovak National Council ( 23 October 1944 – 7 February/21 February 1945)

Chairman/President of the „Zbor povereníkov“ [appr. Board of Commissioners] (till April 1945 in rebellion within Slovakia; then within Czechoslovakia)
Presidium of the Slovak National Council (7 February 1945 – 18 September 1945)
Karol Šmidke (18 September 1945 – 14 August 1946)
Gustáv Husák (16 August 1946 – 7 May 1950)
Karol Bacílek (7 May 1950 – 11 September 1951)
Július Ďuriš (11 September 1951 – 31 January 1953)
Rudolf Strechaj (31 January 1953 – 11 July 1960)

Chairman/President of the Slovak National Council (1960 – 1968; within Czechoslovakia)
Rudolf Strechaj (14 July 1960 – 28 July 1962)
Jozef Lenárt (31 October 1962 – 20 March* 1963) [*other sources September]
Michal Chudík (23 March* 1963 – 29 December 1968)

Prime Minister of the Slovak Socialist Republic [March 1990 - 1992 called Slovak Republic] (1969 – 1992; within Czechoslovakia)
Štefan Sádovský (2 January 1969 – 5 May 1969)
Peter Colotka (5 May 1969 – 12 October 1988)
Ivan Knotek (13? October 1988 - 22 June 1989)
Pavel Hrivnák (23? June 1989 – 8 December 1989)
Milan Čič (10 December 1989 – 27 June 1990)
Vladimír Mečiar (27 June 1990 – 6 May 1991)
Ján Čarnogurský (6 May 1991 – 24 June 1992)
Vladimír Mečiar (24 June 1992 – 31 December 1992) – actually till 14 March 1994

Prime Minister of Slovakia (since 1993; independent Slovakia)
Vladimír Mečiar (1 January 1993-14 March 1994)
Jozef Moravčík (16 March 1994- 13 December 1994)
Vladimír Mečiar (13 December 1994 – 29 October 1998)
Mikuláš Dzurinda (30 October 1998 – 4 July 2006)
Robert Fico (4 July 2006 – present)