List of assemblies called Sejm explained

The Sejm of the Republic of Poland (in Polish pronounced as /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