Westminster-Dewdney was a provincial electoral district in the Canadian province of British Columbia from 1894 to 1900. It and its sister ridings Westminster-Delta, Westminster-Chilliwhack and Westminster-Richmond were successors to the old four-member Westminster riding, which appeared in 1890 only and was a subdivision of the older New Westminster riding. Westminster-Dewdney was succeeded by the Dewdney riding in the election of 1903. This area is currently part of the Maple Ridge-Mission riding, with its former eastern portions now in Chilliwack-Kent (Dewdney had included Agassiz and Harrison Hot Springs in its first incarnation).

Electoral history

!align="right" colspan=3|Total valid votes !align="right"|551 !align="right"|100.00% !align="right"| !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"| !align="right" colspan=3|Total valid votes !align="right"|455 !align="right"|100.00% !align="right"| !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"| !align="right" colspan=7|1 16th Premier of British Columbia !align="right" colspan=3|Total valid votes !align="right"|623 !align="right"|100.00% !align="right"| !align="right" colspan=3|Total rejected ballots !align="right"| !align="right"| !align="right"| !align="right" colspan=3|Turnout !align="right"|% !align="right"| !align="right"| In the large redistribution in advance of the 1903 election, which provided the basis for the modern system of ridings until the 1990s, the Westminster-Dewdney riding was adjusted slightly and renamed Dewdney, which lasted until the general election of 1986.