The following is a list of the forty MPs (members of parliament) who were elected to constituencies of the fifty-fourth parliament of the United Kingdom (UK) within the nation of Wales in 2005 or in subsequent by-elections prior to the dissolution of the 54th Parliament.
(As well as electing MPs to the UK Parliament, Wales has its own National Assembly whose assembly members (AMs) have the power to create secondary legislation.)
In this version of the list, the MPs are arranged, primarily, in descending alphabetical order of political affiliation, and, secondarily, by rough geographical proximity. Constituency names appear in parentheses following the MPs' common names.
In this version of the list, the Welsh MPs are arranged, primarily, in descending alphabetical order of their surnames, and, secondarily, by descending alphabetical order of their common forenames. Constituency names appear in parentheses following the MPs' names, and political affiliations appear in (square) brackets following that.