List of New Brunswick by-elections

The list of New Brunswick by-elections includes every by-election held in the Canadian province of New Brunswick. By-elections occur whenever there is a vacancy in the Legislative Assembly, although an imminent general election may allow the vacancy to remain until the dissolution of parliament. Between 1842 and 1927 incumbent members were required to recontest their seats upon being appointed to Cabinet. These Ministerial by-elections were almost always uncontested.

59th New Brunswick Legislature 2018–2020

''No by-elections were held during the 59th New Brunswick Legislature's term.''

55th New Brunswick Legislature 2003–2006

51st New Brunswick Legislature 1987–1991

47th New Brunswick Legislature 1970–1974

43rd New Brunswick Legislature 1956–1960

''no by-elections''

42nd New Brunswick Legislature 1952–1956

''no by-elections''

40th New Brunswick Legislature 1944–1948

† Won by acclamation

39th New Brunswick Legislature 1939–1944

† Won by acclamation

38th New Brunswick Legislature 1935–1939

''no by-elections''

37th New Brunswick Legislature 1930–1935

† Won by acclamation

36th New Brunswick Legislature 1925–1930

† Won by acclamation

35th New Brunswick Legislature 1920–1925

† Won by acclamation

34th New Brunswick Legislature 1917–1920

† Won by acclamation

33rd New Brunswick Legislature 1912–1917

† Won by acclamation

32nd New Brunswick Legislature 1908–1912

† Won by acclamation

31st New Brunswick Legislature 1903–1908

† Won by acclamation

30th New Brunswick Legislature 1899–1903

† Won by acclamation

29th New Brunswick Legislature 1895–1899

† Won by acclamation

28th New Brunswick Legislature 1892–1895

† Won by acclamation

26th New Brunswick Legislature 1886–1890

† Won by acclamation

25th New Brunswick Legislature 1882–1886

† Won by acclamation

24th New Brunswick Legislature 1878–1882

† Won by acclamation

23rd New Brunswick Legislature 1874–1878

† Won by acclamation

22nd New Brunswick Legislature 1870–1874

† Won by acclamation

21st New Brunswick Legislature 1866–1870

† Won by acclamation

20th New Brunswick Legislature 1865–1866

† Won by acclamation

19th New Brunswick Legislature 1861–1865

† Won by acclamation

18th New Brunswick Legislature 1857–1861

† Won by acclamation

17th New Brunswick Legislature 1856–1857

† Won by acclamation

16th New Brunswick Legislature 1854–1856

† Won by acclamation

15th New Brunswick Legislature 1850–1854

† Won by acclamation

13th New Brunswick Legislature 1843–1846

† Won by acclamation

12th New Brunswick Legislature 1837–1842

† Won by acclamation

10th New Brunswick Legislature 1830–1834

† Won by acclamation

8th New Brunswick Legislature 1820–1827

† Won by acclamation

7th New Brunswick Legislature 1819–1820

''no by-elections''

5th New Brunswick Legislature 1809–1816

† Won by acclamation

2nd New Brunswick Legislature 1793–1795

''no by-elections held''