A by-election was held in the UK parliament constituency of Bromley and Chislehurst in London, following the death of Conservative Member of Parliament Eric Forth on 17 May 2006. The writ for the electing of a new member was issued on 6 June for a polling day of 29 June 2006, the same day as the Blaenau Gwent by-elections. The Conservatives held the seat but with their majority much reduced by the Liberal Democrats.

Eric Forth was a British Conservative politician. He served as Member of the European Parliament (MEP) for Birmingham North from 1979 to 1984. He then served as Member of Parliament (MP) for Mid Worcestershire from 1983 to 1997. Finally, he served as MP for Bromley and Chislehurst from 1997 until his death in 2006.