By-elections in Hungary occur to fill vacant constituency seats in the National Assembly of Hungary. Vacant list seats are filled by the next member of the list of the respective MP. If there are no more members on the list, the seat is left vacant.
By-elections 2022–2026 Parliament Constituency Date Incumbent Party Winner Party Cause SourceBudapest 112025-03-23László Varju DKLászló VarjuDKResignation Tolna 022025-01-12Árpád Potápi FideszKrisztina Csibi FideszDeath
2018–2022 Parliament Constituency Date Incumbent Party Winner Party Cause SourceBorsod 062020-10-11Ferenc Koncz FideszZsófia Koncz FideszDeath Fejér 042020-02-16Tamás Pintér JobbikGergely Kálló JobbikResignation
2014–2018 Parliament Constituency Date Incumbent Party Winner Party Cause SourceVeszprém 032015-04-12Jenő Lasztovicza FideszLajos Rig JobbikDeathVeszprém 012015-02-22Tibor Navracsics FideszZoltán Kész Ind.ResignationBudapest 112014-11-23Péter Kiss MSZPImre Horváth MSZPDeath
2010–2014 Parliament Constituency Date Incumbent Party Winner Party Cause SourceBékés 032010-09-19, 2010-10-03László Domokos FideszBéla Dankó FideszResignationHajdú-Bihar 062011-06-05, 2011-06-19, 2011-10-02, 2011-10-16Sándor Arnóth FideszSándor Bodó FideszDeathBudapest 022011-11-13, 2011-11-27István Balsai FideszZsolt Láng FideszResignation
2006–2010 Parliament Constituency Date Incumbent Party Winner Party Cause SourceVeszprém 062010-10-01Balázs Horváth FideszZsolt Horváth FideszDeathBudapest 152008-01-27, 2008-02-10András Deák KDNPBence Rétvári FideszDeathBudapest 122009-01-11, 2009-01-25Ferenc Gegesy SZDSZJános Bácskai FideszResignationBaranya 032009-06-07, 2009-06-21, 2009-10-04, 2009-10-18László Toller MSZPunfilled unfilledIncapacityGyőr-Moson-Sopron 052009-11-08, 2009-11-22János Áder FideszAlpár Gyopáros FideszResignation
2002–2006 Parliament Constituency Date Incumbent Party Winner Party Cause SourceGyőr-Moson-Sopron 072004-11-14, 2004-11-28, 2005-04-24, 2005-05-08József Szájer FideszMátyás Firtl FideszResignationNógrád 032004-11-14, 2004-11-28László Surján FideszAndor Nagy FideszResignation
1998–2002 Parliament Constituency Date Incumbent Party Winner Party Cause SourceFejér 021999-09-26, 1999-10-10, 2000-04-02, 2000-04-16Béla Gyuricza FideszAlbert Molnár MSZPDeathSomogy 031999-09-26, 1999-10-10Péter Kálmán Rajcsányi FideszJózsef Házas MSZPDeathSzabolcs-Szatmár-Bereg 102000-04-02, 2000-04-16József Zilahi MDFJános Lengyel FKgPDeathPest 142001-03-25, 2001-04-08Attila Buza FideszLajos Szűcs FideszDeath
1994–98 Parliament No by-election was held during this Parliament.
1990–94 Parliament Constituency Date Incumbent Party Winner Party Cause SourceKomárom-Esztergom 031991-03-24, 1991-04-14, 1991-07-14, 1991-09-15, 1992-01-12, 1992-02-16, 1992-06-07, 1992-06-21Sándor Deák SZDSZGyörgy Keleti MSZPDeathBudapest 091991-03-27, 1991-04-14Gábor Demszky SZDSZPál Filó MSZPResignationBorsod-Abaúj Zemplén 111991-08-11, 1991-09-15Miklós Németh Ind.Mihály Kupa Ind.ResignationBékés 011992-05-10, 1992-05-24Zoltán Szokolay MDFÉva Sarkadiné Lukovics SZDSZResignationBács-Kiskun 04József Faddi FKgPTamás Gábor Nagy Agrarian AllianceDeath
See also Elections in Hungary
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