Queen Victoria was the monarch of the United Kingdom of Great Britain and Ireland and of the British Empire from 20 June 1837 until her death on 22 January 1901. At the start of her reign, responsible government outside of the United Kingdom itself was unknown, but starting in the 1840s this would change.^{[citation needed]}

During her reign Victoria was served by well over 33 prime ministers: 15 from New Zealand, 10 from the United Kingdom, 7 from the Dominion of Canada, and 1 from Australia.

• From 1856 until 1869 the office now referred to as prime minister of New Zealand was called colonial secretary and from 1869 until 1907 was called premier of New Zealand.

	Henry Sewell	7 May 1856 – 20 May 1856
	William Fox	20 May 1856–2 June 1856 12 July 1861–6 August 1862 28 June 1869–10 September 1872 3 March 1873 – 8 April 1873
	Edward Stafford	2 June 1856–12 July 1861 16 October 1865–28 June 1869 10 September 1872 – 11 October 1872
	Alfred Domett	6 August 1862 – 30 October 1863
	Frederick Whitaker	30 October 1863 – 24 November 1864
	Frederick Weld	24 November 1864–16 October 1865 21 April 1882 – 25 September 1883
	George Waterhouse	11 October 1872 – 3 March 1873
	Julius Vogel	8 April 1873–6 July 1875 15 February 1876 – 1 September 1876
	Daniel Pollen	6 July 1875 – 15 February 1876
	Harry Atkinson	1 September 1876–13 October 1877 25 September 1883–16 August 1884 28 August 1884–3 September 1884 8 October 1887 – 24 January 1891
	George Grey	13 October 1877 – 8 October 1879
	John Hall	8 October 1879 – 21 April 1882
	Robert Stout	16 August 1884–28 August 1884 3 September 1884 – 8 October 1887
	John Ballance	24 January 1891 – 27 April 1893
	Richard Seddon	27 April 1893 – 22 January 1901

• British Empire
• Constitutional monarchy
• Dominion