The Diwan or Dewan of Travancore was the head of government of Travancore in the nineteenth and twentieth centuries, serving at the pleasure of the Maharaja, corresponding to a prime minister, and consisting in the formal titles Valiya Sarvadhikaryakar and Dalawa until the insurrection of Velu Thampi Dalawa and administrative reforms of John Munro. Post-Munro, the title of Dalawa, which remained formally the highest ranking established office, though administratively impotent, was revived as a sinecure to sideline Raman Menon and remove him from the Diwanship. The office of Diwan existed until 1948, when it gave way to the office of Prime Minister of Travancore.

• Arumukan Pillai (1729–1736)
• Nanu Pillai (1736–1737)
• Ramayyan Dalawa (1737–1756)
• Martandan bagavathi Pillai (1756–1763)
• Subbayyan Dalawa (1763–1768)
• Krishna Gopalayyan Iyyer (1768–1776)
• Vadiswaran Subbrahmanya Iyer (1776–1780)
• Mullen Chempakaraman Pillai (1780–1782)
• Nagercoil Ramayyan (1782–1788)
• Krishnan Thampi (1788–1789)
• Raja Kesavadas, also known as Kesava Pillai (1789–1798)
• Odiery Jayanthan Sankaran Nampoothiri (1798–1799)
• Velu Thampi Dalawa (1799–1809)
• Oommini Thampi (1809–1811)
• Col. John Munro (1811–1814)
• Devan Padmanabhan Menon (1814–1814)
• Bappu Rao (acting; 1814–1815)
• Sanku Annavi Pillai (1815–1815)
• Raman Menon (1815–1817)
• Reddy Row (1817–1821)
• T. Venkata Rao (1821–1830)
• Thanjavur Subha Rao (1830–1837)
• Ranga Rao (acting; 1837–1838)
• T. Venkata Rao (second time; 1838–1839)
• Thanjavur Subha Rao (second time; 1839–1842)
• Krishna Rao (acting; 1842–1843)
• Reddy Row (second time; 1843–1845)
• Srinivasa Rao (acting; 1845–1846)
• Vemuri Krishna Rao (1846–1857)

Name	Portrait	Took office	Left office	Term[1]
T. Madhava Rao		1858	1872	1
A. Seshayya Sastri		1872	1877	1
Nanoo Pillai		1877	1880	1
V. Ramiengar		1880	1887	1
T. Rama Rao		1887	1892	1
S. Shungrasoobyer		1892	1898	1
K. Krishnaswamy Rao		15 April 1898	13 March 1904	1
V. P. Madhava Rao		14 March 1904	26 March 1906	1
S. Gopalachari		16 August 1906	26 October 1907	1
P. Rajagopalachari		26 October 1907	11 May 1914	1
M. Krishnan Nair		11 May 1914	7 July 1920	1
T. Raghavaiah		8 July 1920	18 May 1925	1
M. E. Watts		1925	1929	1
V. S. Subramanya Iyer		1929	1932	1
Thomas Austin		1932	1934	1
Muhammad Habibullah		1934	1936	1
C. P. Ramaswami Iyer		1936	1947	1
P. G. N. Unnithan		1947	1948	1

• Prime Minister of Hyderabad
• List of Diwans of Mysore

• Travancore, Princely States of India, WorldStatesmen.org

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