On March 25, 1798, it lost territory to establish theDiocese of Wigry and became a suffragan see of theArchdiocese of Mohilev (until 1926). On July 3, 1848, it gained territory from the persisting thenDiocese of Vilnius, now Lithuania's other Metropolitan see. On June 9, 1920, it lost territory to the existingDiocese of Riga (inLatvia), while in the next year it gained territory from the persistingDiocese of Sejny (inPoland).
It enjoyed a Papal Visit fromPope John Paul II in September 1993. On May 28, 1997, parts of the archdiocese have been ceded to the newly founded suffraganDiocese of Šiauliai.
Stanislovas Kiška (Stanisław Kiszka) (1618.11.26 – death 1626.02.13)
Abraomas Voina (Abraham Woyna) (1626.07.20 – 1631.03.24), previously Titular Bishop ofModon (1611.05.25 – 1626.07.20) & Auxiliary Bishop of Vilnius (Lithuania) (1611.05.25 – 1626.07.20); later Bishop of Vilnius (1631.03.24 – death 1649.04.14)
Merkelis Elijaševičius Geišas (Melchior Elijaszewicz Geisz) (1631.06.11 – death 1633.01.28)
Jurgis Tiškevičius (Jerzy Tyszkiewicz) (1633.12.19 – 1649.12.09), previously Titular Bishop ofModon (1627.05.17 – 1633.12.19) & Auxiliary Bishop ofVilnius (1627.05.17 – 1633.12.19); later Bishop of Vilnius (1649.12.09 – death 1656.01.17)
Petras Parčevskis (Piotr Parczewski) (1649.12.09 – death 1658.12.06), previously Bishop ofSmolensk (Lithuania) (1636.09.01 – 1649.12.09)
Aleksandras Kazimieras Sapiega (Aleksander Kazimierz Sapieha) (1660.01.12 – 1667.07.18), previously Titular Bishop ofModon (1655.08.02 – 1660.01.12) & Auxiliary Bishop of Vilnius (Lithuania) (1655.08.02 – 1660.01.12); later Bishop of Vilnius (1667.07.18 – death 1671.05.22)
Kazimieras Pacas (Kazimierz Pac) (1667.10.03 – death 1695), previously Bishop ofSmolensk (Lithuania) (1664.01.14 – 1667.10.03)
Jonas Mikalojus Zgierskis (Jan Mikołaj Zgierski) (1710.07.21 – death 1713.12.06), previously Titular Bishop ofMartiria (1696.01.02 – 1706.01.25) & Auxiliary Bishop of Vilnius (Lithuania) (1696.01.02 – 1710.07.21) and next Bishop ofSmolensk (Russia) (1706.01.25 – 1710.07.21)
Povilas Pranciškus Sapiega (Paweł Franciszek Sapieha),Cistercians (O. Cist.) (1715.01.21 – death 1715.10.01)
Aleksandras Mikalojus Gorainis (Aleksander Mikołaj Horain) (1716.12.07 – death 1735.12.07), previously TitularBishop of Tiberias (1704.09.15 – 1711.12.23) & Auxiliary Bishop of Vilnius (1704.09.15 – 1711.12.23), Bishop ofSmolensk (Russia) (1711.12.23 – 1716.12.07)
Juozapas Mykolas Karpis (Józef Michał Karp) (1736.11.19 – death 1739.12.10)
Antanas Tiškevičius (Antoni Dominik Tyszkiewicz) (1740.09.16 – death 1762.01.31), previously Titular Bishop ofMennith (1739.07.20 – 1740.09.16) & Auxiliary Bishop ofKijów–Czernihów (Poland) (1739.07.20 – 1740.09.16)
Dominykas Lopacinskis (Jan Dominik Łopaciński) (1762.04.19 – death 1778.01.11)
Józef Arnulf Giedroyć, longest serving Bishop of Samogitia
Juozapas Arnulfas Giedraitis (Józef Arnulf Giedroyć) (1802.05.13 – death 1838.07.17), succeeding as formerCoadjutor Bishop of Samogitia ([1790.12.04] 1791.04.11 – 1802.05.13 & Titular Bishop of Orthosia (1791.04.11 – 1802.05.13)
Apostolic Administrator Simonas Mikalojus Giedraitis (Szymon Michal Józef Arnold Giedroyć) (1838.07.17 – 1844.08.07), former Titular Bishop ofAdramyttium (1804.08.20 – 1838.07.17), Auxiliary Bishop of Samogitia (1804.08.20 – 1829.12) andCoadjutor Bishop of Samogitia (1829.12 – 1838.07.17, not formally succeeding)
Jonas Krizostomas Gintila (1844.08.07 – 1849.09.28not possessed)
Motiejus Valančius (Maciej Kazimierz Wołonczewski) (1849.09.28 – death 1875.05.29)
Apostolic Administrator Aleksandras Kazimieras Beresnevičius (Aleksander Kazimierz Bereśniewicz) (1875.05.30 – 1883.03.15), Titular Bishop ofMaximianopolis (1858.09.27 – 1883.03.15), former Auxiliary Bishop of Samogitia (1858.09.27 – 1875.05.30); later Bishop ofKujawy–Kalisz (Poland) (1883.03.15 – 1902.06.04)
ArchbishopSigitas Tamkevičius,Society of Jesus (S.J.) (1996.05.04 – retired 2015.06.11), also President of Episcopal Conference of Lithuania (1999.11.03 – 2002.09.20), vice-president of Episcopal Conference of Lithuania (2002.09.20 – 2005.09.20), President of Episcopal Conference of Lithuania (2005.09.20 – 2014.10.28); previously Titular Bishop ofTuruda & Auxiliary Bishop of Kaunas (1991.05.08 – 1996.05.04); as emeritus, becameCardinal-Priest ofSant'Angela Merici 10.05.2019
ArchbishopLionginas Virbalas, S.J. (2015 – retired 2019.03.01), also vice-president of Episcopal Conference of Lithuania (2014.10.28 – 2015.06.11); previously Bishop ofPanevėžys (2013.06.06 – 2015.06.11)