This is a list of MPs elected in the 1802 United Kingdom general election and their replacements returned at subsequent by-elections, arranged by constituency.

The second United Kingdom Parliament was summoned to meet on 31 August 1802 and was dissolved on 24 October 1806.

[1] This Parliament was the first elected by a UK-wide election following the 1801 Union between Great Britain and Ireland and the creation of the first Parliament of the United Kingdom, whose members were co-opted from the previous House of Commons of Great Britain and Irish House of Commons.

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