| 1 | A | B | C | D | E | F | G |
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| 2 | List of Chief Ministers of Kerala - Chief Ministers of Kerala |  |  |  |  |  |  |
| 3 | No. | Name Constituency Ministry | Portrait | Term (tenure length) | Assembly (election) | Party (alliance) | Party (alliance) |
| 4 | – | Vacant (President's rule) | - | 1 November 1956 – 5 April 1957 (155 days) | Dissolved | N/A | - |
| 5 | 1 | E. M. S. Namboodiripad MLA for Nileshwaram 1st EMS ministry | - | 5 April 1957 – 31 July 1959 (2 years, 117 days) | First Assembly (1957–59) (1957 election) | Communist Party of India | - |
| 6 | – | Vacant (President's rule) | - | 31 July 1959 – 22 February 1960 (206 days) | Dissolved | N/A | - |
| 7 | 2 | Pattom A. Thanu Pillai MLA for Trivandrum II Thanupillai ministry | - | 22 February 1960 – 26 September 1962 (2 years, 216 days) | Second Assembly (1960–64) (1960 election) | Praja Socialist Party | - |
| 8 | 3 | R. Sankar MLA for Cannanore I Sankar ministry | - | 26 September 1962 – 10 September 1964 (1 year, 350 days) | Second Assembly (1960–64) (1960 election) | Indian National Congress | - |
| 9 | – | Vacant (President's rule) | - | 10 September 1964 – 25 March 1965 (2 years, 177 days) | Dissolved | N/A | - |
| 10 | – | Vacant (President's rule) | - | 25 March 1965 – 6 March 1967 (2 years, 177 days) | Dissolved (1965 election) | N/A | - |
| 11 | (1) | E. M. S. Namboodiripad MLA for Pattambi Second E. M. S. Namboodiripad ministry | - | 6 March 1967 – 1 November 1969 (2 years, 240 days; total 4 years, 357 days) | Third Assembly (1967–70) (1967 election) | Communist Party of India (Marxist) (Saptakakshi Munnani) | - |
| 12 | 4 | C. Achutha Menon MLA for Kottarakkara First C. Achutha Menon ministry | - | 1 November 1969 – 1 August 1970 (273 days) | Third Assembly (1967–70) (1967 election) | Communist Party of India | - |
| 13 | – | Vacant (President's rule) | - | 4 August – 3 October 1970 (60 days) | Dissolved | N/A | - |
| 14 | (4) | C. Achutha Menon MLA for Kodakara Second C. Achutha Menon ministry | - | 4 October 1970 – 25 March 1977 (6 years, 172 days; total 7 years, 80 days) | Fourth Assembly (1970–77) (1970 election) | Communist Party of India (United Front) | - |
| 15 | 5 | K. Karunakaran MLA for Mala First K. Karunakaran ministry | - | 25 March – 25 April 1977 (31 days) | Fifth Assembly (1977–79) (1977 election) | Indian National Congress (United Front) | - |
| 16 | 6 | A. K. Antony MLA for Kazhakkuttom First A. K. Antony ministry | - | 27 April 1977 – 27 October 1978 (1 year, 183 days) | Fifth Assembly (1977–79) (1977 election) | Indian National Congress (United Front) | - |
| 17 | 7 | P. K. Vasudevan Nair MLA for Alleppey P. K. Vasudevan Nair ministry | - | 29 October 1978 – 7 October 1979 (343 days) | Fifth Assembly (1977–79) (1977 election) | Communist Party of India (United Front) | - |
| 18 | 8 | C. H. Mohammed Koya MLA for Malappuram C. H. Mohammed Koya ministry | - | 12 October – 1 December 1979 (50 days) | Fifth Assembly (1977–79) (1977 election) | Indian Union Muslim League (United Front) | - |
| 19 | – | Vacant (President's rule) | - | 5 December 1979 – 25 January 1980 (51 days) | Dissolved | N/A | - |
| 20 | 9 | E. K. Nayanar MLA for Malampuzha First E. K. Nayanar ministry | Ek nayanar.jpeg | 25 January 1980 – 20 October 1981 (1 year, 268 days) | Sixth Assembly (1980–82) (1980 election) | Communist Party of India (Marxist) (Left Democratic Front) | - |
| 21 | – | Vacant (President's rule) | - | 21 October – 28 December 1981 (68 days) | Sixth Assembly (1980–82) (1980 election) | N/A | - |
| 22 | (5) | K. Karunakaran MLA for Mala Second K. Karunakaran ministry | - | 28 December 1981 – 17 March 1982 (79 days) | Sixth Assembly (1980–82) (1980 election) | Indian National Congress (I) (United Democratic Front) | - |
| 23 | – | Vacant (President's rule) | - | 17 March – 23 May 1982 (67 days; total 4 years, 54 days) | Dissolved | N/A | - |
| 24 | (5) | K. Karunakaran MLA for Mala Third K. Karunakaran ministry | - | 24 May 1982 – 25 March 1987 (4 years, 305 days) | Seventh Assembly (1982–87) (1982 election) | Indian National Congress (United Democratic Front) | - |
| 25 | (9) | E. K. Nayanar MLA for Trikaripur Second E. K. Nayanar ministry | Ek nayanar.jpeg | 26 March 1987 – 17 June 1991 (4 years, 83 days) | Eighth Assembly (1987–91) (1987 election) | Communist Party of India (Marxist) (Left Democratic Front) | - |
| 26 | (5) | K. Karunakaran MLA for Mala Fourth K. Karunakaran ministry | - | 24 June 1991 – 16 March 1995 (3 years, 265 days; total 8 years, 315 days) | Ninth Assembly (1991–95) (1991 election) | Indian National Congress (United Democratic Front) | - |
| 27 | (6) | A. K. Antony MLA for Thirurangadi Second A. K. Antony ministry | - | 22 March 1995 – 9 May 1996 (1 year, 48 days) | Ninth Assembly (1991–95) (1991 election) | Indian National Congress (United Democratic Front) | - |
| 28 | (9) | E. K. Nayanar MLA for Thalassery Third E. K. Nayanar ministry | Ek nayanar.jpeg | 20 May 1996 – 13 May 2001 (5 years, 24 days; total 11 years, 10 days) | Tenth Assembly (1996–2001) (1996 election) | Communist Party of India (Marxist) (Left Democratic Front) | - |
| 29 | (6) | A. K. Antony MLA for Cherthala Third A. K. Antony ministry | - | 17 May 2001 – 29 August 2004 (3 years, 75 days; total 5 years, 306 days) | Eleventh Assembly (2001–06) (2001 election) | Indian National Congress (United Democratic Front) | - |
| 30 | 10 | Oommen Chandy MLA for Puthuppally First Oommen Chandy ministry | - | 31 August 2004 – 12 May 2006 (1 year, 254 days) | Eleventh Assembly (2001–06) (2001 election) | Indian National Congress (United Democratic Front) | - |
| 31 | 11 | V. S. Achuthanandan MLA for Malampuzha V. S. Achuthanandan ministry | V. S. Achuthanandan.JPG | 18 May 2006 – 14 May 2011 (4 years, 361 days) | Twelfth Assembly (2006–11) (2006 election) | Communist Party of India (Marxist) (Left Democratic Front) | - |
| 32 | (10) | Oommen Chandy MLA for Puthuppally Second Oommen Chandy ministry | - | 18 May 2011 – 20 May 2016 (5 years, 2 days; total 6 years, 256 days) | Thirteenth Assembly (2011–16) (2011 election) | Indian National Congress (United Democratic Front) | - |
| 33 | 12 | Pinarayi Vijayan MLA for Dharmadam Pinarayi Vijayan ministry | - | 25 May 2016 – present (2 years, 340 days) | Fourteenth Assembly (2016–21) (2016 election) | Communist Party of India (Marxist) (Left Democratic Front) | - |

Question: How many times did K. Karunakaran serve as the Chief Minister of Kerala, and what were the dates of each tenure?
Answer: K. Karunakaran served as the Chief Minister of Kerala four times: for a brief period from March 1977 to April 1977, another short term from December 1981 to March 1982, followed by a brief period of president's rule from May 1982 to March 1987, and from June to March 1995.