This article presents detailed results of the 2009 Japanese general election.

It lists all elected Representatives in the 300 single-member districts and the 11 regional proportional representation (PR) blocks.

The top PR block replacement candidates to be elected later without vote in cases of death, resignation or disqualification (kuriage-tōsen) are also listed, by-elections are not.

Party names are abbreviated as follows (format: abbreviation, translated name, Japanese name, English name): Note that due to undernomination and disqualifications of PR candidates concurrently running in a district but failing to obtain one tenth of the district vote, one seat in Tōkai were reassigned from the original election result d'Hondt distribution; the number of seats each party would have received under the original distribution is given in parentheses.

[1] Note that due to undernomination and disqualifications of PR candidates concurrently running in a district but failing to obtain one tenth of the district vote, several seats in Kinki were reassigned from the original d'Hondt distribution according to vote shares; the number of seats each party would have received under the original distribution is given in parentheses.