List of assemblies called Sejm
The Sejm of the Republic of Poland (Polish pronunciation: [ˈsɛjm] ⓘ; Polish: Sejm Rzeczypospolitej Polskiej) is the lower house of the Polish parliament. Its name comes from what was once a generic Polish word for a political gathering. It is also used to refer to historical diets or assemblies.
Pre-partition sejms
- Sejm of the Kingdom of Poland, 15th–16th centuries
 - Sejm of the Polish–Lithuanian Commonwealth, 1569–1793
 - Sejm of Four Lands, or Council of Four Lands (Sejm Czterech Ziem, Va'ad Arba' Aratzot), central Jewish authority in Poland, 1580–1764
 
Types of sessions
- Confederated sejm (sejm skonfederowany), a form of sejm where decisions were made by the majority of deputy votes cast
 - Convocation sejm (sejm konwokacyjny), part of the process of royal elections in which candidates were put forward and rules of election established
 - Coronation sejm (sejm koronacyjny), the first sejm convened by a newly crowned king
 - Election sejm (sejm elekcyjny), the election of the king by the nobility
 - Pacification sejm (Sejm pacyfikacyjny), held after a period of conflict, usually a disputed royal election, to bring peace and unity to the country
 
Specific sessions
In chronological order:
- Convocation Sejm (1764)
 - Election Sejm of 1632
 - Silent Sejm (Sejm Niemy), 1717
 - Repnin Sejm (Sejm Repninowski), 1767–1768
 - Partition Sejm (Sejm Rozbiorowy), 1773–1775
 - Great Sejm (Sejm Wielki), 1788–1792
 - Grodno Sejm (Sejm Grodzieński), 1793
 
Post-partition sejms
In chronological order:
- Galician Sejm (Sejm Galicyjski, Sejm Krajowy), or Diet of Galicia and Lodomeria, 1861–1918
 - Silesian Sejm, or Silesian Parliament (Sejm Śląski), legislature of the Autonomous Silesian Voivodeship, 1920–1939
 - Sejm of the Republic of Central Lithuania (Sejm Litwy Środkowej), 1922
 - Contract Sejm (sejm kontraktowy), 1989–1991
 
See also
- Saeima, the parliament of Latvia
 - Seimas, the parliament of Lithuania
 - Seym River, a river in Russia and Ukraine spelled "Sejm" in Polish