List of Prime Ministers of New Zealand by time in office
Ranked list
The following list is ranked by their total term in office (multiple terms are added together to give the total term in office).

List of Prime Ministers of New Zealand by time in office

Section Title: Ranked list
Table Section Text: The following list is ranked by their total term in office (multiple terms are added together to give the total term in office).

Rank	Name	Party	Term(s)

1	Richard Seddon †	Liberal	13 years, 44 days

2	William Massey †	Reform	12 years, 304 days

3	Keith Holyoake	National	11 years, 140 days

4	Peter Fraser	Labour	9 years, 261 days

5	Helen Clark	Labour	8 years, 345 days

6	Edward Stafford	None	8 years, 326 days

7	Robert Muldoon	National	8 years, 227 days

8	John Key	National	8 years, 23 days

9	Sidney Holland	National	7 years, 281 days

10	Joseph Ward	Liberal	7 years, 38 days

United

11	Jim Bolger	National	7 years, 36 days

12	George Forbes	United	5 years, 192 days

13	Harry Atkinson	None	5 years, 116 days

14	David Lange	Labour	5 years, 13 days

15	William Fox	None	4 years, 148 days

16	Michael Joseph Savage †	Labour	4 years, 112 days

17	Gordon Coates	Reform	3 years, 194 days

18	Robert Stout	None	3 years, 47 days

19	Walter Nash	Labour	3 years, 0 days

20	Julius Vogel	None	2 years, 288 days

21	John Hall	None	2 years, 195 days

22	Frederick Whitaker	None	2 years, 182 days

23	John Ballance †	Liberal	2 years, 93 days

24	Jenny Shipley	National	2 years, 2 days

25	George Grey	None	1 year, 360 days

26	Norman Kirk †	Labour	1 year, 266 days

27	Jacinda Ardern (incumbent)	Labour	1 year, 179 days

28	Bill Rowling	Labour	1 year, 97 days

29	Alfred Domett	None	1 year, 85 days

30	Geoffrey Palmer	Labour	1 year, 27 days

31	Frederick Weld	None	326 days

32	Bill English	National	318 days

33	Jack Marshall	National	305 days

34	Daniel Pollen	None	224 days

35	George Waterhouse	None	143 days

36	Thomas Mackenzie	Liberal	104 days

37	Mike Moore	Labour	59 days

38	William Hall-Jones	Liberal	57 days

39	Francis Bell	Reform	16 days

40	Henry Sewell	None	13 days

Sentence(s)

In office for thirteen years, Seddon is New Zealand's longest-serving head.

final_sentence: In office for thirteen years, Seddon is New Zealand's longest-serving head.