Rama Varma III (1687–1693) Ravi Varma II (1693–1697) Rama Varma IV (1697–1701) Rama Varma V (1701–1721) Ravi Varma III (1721–1731) Rama Varma VI (1731–1746) Kerala Varma I (1746–1749) Rama Varma VII (1749–1760) Kerala Varma II (1760–1775) Rama Varma VIII (1775–1790) Rama Varma IX (Shaktan Thampuran) (1790–1805) As a British princely state Rama Varma X (1805 - 1809) – Vellarapalli-yil Theepetta Thampuran (King who died in "Vellarapali") Kerala Varma III (Veera Kerala Varma) (1809–1828) – Karkidaka Maasathil Theepetta Thampuran (King who died in "karkidaka" month(ME)) Rama Varma XI (1828–1837) – Thulam-Maasathil Theepetta Thampuran (King who died in "Thulam" month (ME)) Rama Varma XII (1837–1844) – Edava-Maasathil Theepetta Thampuran (King who died in "Edavam" month (ME)) Rama Varma XIII (1844–1851) – Thrishur-il Theepetta Thampuran (King who died in "Thrishivaperoor" or Thrishur) Kerala Varma IV (Veera Kerala Varma) (1851–1853) – Kashi-yil Theepetta Thampuran (King who died in "Kashi" or Varanasi) Ravi Varma IV (1853–1864) – Makara Maasathil Theepetta Thampuran (King who died in "Makaram" month (ME)) Rama Varma XIV (1864–1888) – Mithuna Maasathil Theepetta Thampuran (King who died in "Mithunam" month (ME)) Kerala Varma V (1888–1895) – Chingam Maasathil Theepetta Thampuran (King who died in "Chingam" month (ME)) Rama Varma XV (Sir Sri Rama Varma) (1895–1914) – aka Rajarshi, Abdicated Highness (died in 1932) Rama Varma XVI (1914–1932) – Madrasil Theepetta Thampuran (King who died in Madras or Chennai) Rama Varma XVII (1932–1941) – Dhaarmika Chakravarthi (King of Dharma), Chowara-yil Theepetta Thampuran (King who died in "Chowara") Kerala Varma VI (1941–1943) – Midukkan Thampuran Ravi Varma V (Ravi Varma Kunjappan Thampuran) (1943–1946) – Kunjappan Thampuran (Brother of Midukkan Thampuran) Kerala Varma VII (1946–1948) – Aikya Keralam Thampuran (The King who unified Kerala) Rama Varma XVIII (1948-1964) was known by the name of Parikshith Thampuran. He was the last official ruler of the princely state of Cochin. He had signed, in 1949, the accession agreement to Indian Union. The integration was completed in another year. Post-independence (Titular only) Rama Varma XVIII (1948-1964) was known by the name of Parikshith Thampuran. Rama Varma XIX (1964–1975) – Lalan Thampuran - stripped of official recognition in 1971 under the 26th Amendment of the Constitution of India by Indira Gandhi's Government. Rama Varma XX (1975–2004) – Anyian Kochunni Thampuran Kerala Varma VIII (2004–2011) – Kochunni Thampuran Rama Varma XXI (2011–2014) – Kochaniyan Thampuran Ravi Varma VI (2014–2020) – Kochaniyan Thampuran Ravi Varma (2020–present) Prime Ministers of Cochin (1947–49)