Seimas groups for inter-parliamentary relations
- Group for Inter-Parliamentary Relations with Ireland
- Group for Inter-Parliamentary Relations with the Republic of Armenia
- Group for Inter-Parliamentary Relations with the Republic of Austria
- Group for Inter-Parliamentary Relations with the Republic of Azerbaijan
- Group for Inter-Parliamentary relations with Countries of Australia, New Zealand And Oceania
- Group for Inter-Parliamentary Relations with the Kingdom of Belgium, the Kingdom of the Netherlands, and the Grand Duchy of Luxembourg
- Group for Inter-Parliamentary Relations with the Republic of Bulgaria
- Group for Inter-Parliamentary Relations with the Czech Republic and the Slovak Republic
- Group for Inter-Parliamentary Relations with the Republic of Estonia
- Group for Inter-Parliamentary Relations with the Hellenic Republic
- Group for Inter-Parliamentary Relations with the Republic of India
- Group for Inter-Parliamentary Relations with the Republic of Iraq
- Group for Inter-Parliamentary Relations with the Kingdom of Spain
- Group for Inter-Parliamentary Relations with the Italian Republic
- Group for Inter-Parliamentary Relations with the State of Israel
- Group for Inter-Parliamentary Relations with Japan
- Group for Inter-Parliamentary Relations with the United States of America
- Group for Inter-Parliamentary Relations with the United Kingdom of Great Britain and Northern Ireland
- Group for Inter-Parliamentary Relations with the United Arab Emirates
- Group for Inter-Parliamentary Relations with Canada
- Group for Inter-Parliamentary Relations with the Republic of Kazakhstan
- Group for Inter-Parliamentary Relations with the People's Republic of China
- Group for Inter-Parliamentary Relations with the Republic of Korea
- Group for Inter-Parliamentary Relations with the Republic of Croatia
- Group for Inter-Parliamentary Relations with the Republic of Latvia
- Group for Inter-Parliamentary Relations with the Sejm and Senate of the Republic of Poland
- Group for Inter-Parliamentary Relations with the Kingdom of Morocco
- Group for Inter-Parliamentary Relations with the Republic of Moldova
- Group for Inter-Parliamentary Relations with Oman
- Group for Inter-Parliamentary Relations with the Association of Southeast Asian Nations (ASEAN)
- Group for Inter-Parliamentary Relations with the French Republic
- Group for Inter-Parliamentary Relations with the East African States (Kenya, Rwanda, Tanzania, Uganda, Burundi and South Sudan)
- Group for Inter-Parliamentary Relations with Romania
- Group for Inter-Parliamentary Relations with Georgia
- Group for Inter-Parliamentary Relations with the Nordic Countries (Kingdom of Denmark, Iceland, Kingdom of Norway, Republic of Finland, Kingdom of Sweden)
- Group for Inter-Parliamentary Relations with the Swiss Confederation
- Group for Inter-Parliamentary Relations with the Holy See
- Group for Inter-Parliamentary Relations with the Republic of Tadzhikistan
- Group for Inter-Parliamentary Relations with the Republic of Türkiye
- Group for Inter-Parliamentary Relations with Ukraine
- Group for Inter-Parliamentary Relations with Uzbekistan
- Group for Inter-Parliamentary Relations with the Western Balkan Countries (Republic of Albania, Republic of North Macedonia, Montenegro, Republic of Serbia, Bosnia and Herzegovina, Republic of Kosovo)
- Group for Inter-Parliamentary Relations with Hungary
- Group for Inter-Parliamentary Relations with the Federal Republic of Germany