Results of the 2009 Japanese general election

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):
 * Ruling coalition
 * LDP Liberal Democratic Party, Jiyūminshutō
 * Kōmeitō "Justice Party", Kōmeitō, New Justice Party Party
 * JRP "Reform Club", Kaikaku Club, Japan Renaissance Party (cooperated without inclusion in the cabinet)
 * Opposition parties
 * DPJ "Democratic Party", Minshutō, Democratic Party of Japan
 * JCP Japanese Communist Party, Nihon Kyōsantō
 * SDP Social Democratic Party, Shakaiminshutō
 * YP "Everybody's Party", Minna no Tō, Your Party
 * PNP People's New Party, Kokuminshintō
 * NPN New Party Nippon, Shintō Nippon
 * NPD New Party Daichi, Shintō Daichi
 * Other minor parties with candidates: HRP Happiness Realization Party, Honshitsu "New Party 'The Essential'", WECP World Economic Community Party, Freeway "New Party Freeway Club", Smile "Japan Smile Party", Rinkai "Forest and Ocean Party"

Tōkai
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.

Kinki
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.