Lists of United Kingdom by-elections

The list of by-elections in the United Kingdom is divided chronologically by parliament:

Parliament of England

 * List of English by-elections (1689–1700)
 * List of English by-elections (1701–1707)

Parliament of Great Britain

 * List of Great Britain by-elections (1707–1715)
 * List of Great Britain by-elections (1715–1734)
 * List of Great Britain by-elections (1734–1754)
 * List of Great Britain by-elections (1754–1774)
 * List of Great Britain by-elections (1774–1790)
 * List of Great Britain by-elections (1790–1800)

Parliament of the United Kingdom

 * List of United Kingdom by-elections (1801–1806)
 * List of United Kingdom by-elections (1806–1818)
 * List of United Kingdom by-elections (1818–1832)
 * List of United Kingdom by-elections (1832–1847)
 * List of United Kingdom by-elections (1847–1857)
 * List of United Kingdom by-elections (1857–1868)
 * List of United Kingdom by-elections (1868–1885)
 * List of United Kingdom by-elections (1885–1900)
 * List of United Kingdom by-elections (1900–1918)
 * List of United Kingdom by-elections (1918–1931)
 * List of United Kingdom by-elections (1931–1950)
 * List of United Kingdom by-elections (1950–1979)
 * List of United Kingdom by-elections (1979–2010)
 * List of United Kingdom by-elections (2010–present)
 * By-elections to the House of Lords (hereditary peers)

Other parliaments

 * List of by-elections to the Scottish Parliament
 * List of by-elections to the Senedd
 * List of European Parliament by-elections in the United Kingdom
 * List of Northern Ireland Parliament by-elections (1921–1972)
 * Northern Ireland Assembly vacancies are filled by co-option

Local government
Local government by-election results are generally given on the page for the last election in that area, see Category:Council elections in the United Kingdom