2023 in Lithuania

• President: Gitanas Nausėda
• Prime Minister: Ingrida Šimonytė

Ongoing: 2021–2023 Belarus–European Union border crisis, COVID-19 pandemic in Lithuania

• January 18 – Lithuanian government renounced the agreement signed with Belarus on the principles of cross-border cooperation. The bill terminated the agreement signed by the governments of Lithuania and Belarus in Vilnius on June 1, 2006, to set out areas of cross-border cooperation between the two neighbouring countries, as a response to 2021–2023 Belarus–European Union border crisis.[1]
• March 31 – Embassy of India opened in Vilnius, instating first direct diplomatic mission of India in Lithuania.[2]

• January 13: 2023 Lithuania–Latvia pipeline explosion: an explosion in Lithuania–Latvia Interconnection pipeline system by Pasvalio Vienkiemiai village, Pasvalys District Municipality.[3] As a precaution the entire village of Valakėliai was evacuated.[3][4][5]
• January 31: bridge partially collapsed in Kėdainiai downtown over Nevėžis river. Bridge connected the city with main intercity roads.[6][7]
• February 14: a bridge construction that is part of A1 highway in Kaunas collapsed. No casualties reported.[8]

Lithuanian parliament Seimas released the statement confirming the celebratory of following three national anniversaries in 2023:[9]

• 700 years anniversary of establishment of Vilnius
• 100 years anniversary of reunification with Klaipėda
• 400 years anniversary of Josaphat Kuntsevych's sacrifice.

• January 2 – Lithuanian Railways stopped 3 direct train services Šiauliai–Panevėžys, Radviliškis–Mažeikiai and Radviliškis–Šiauliai. All 3 routes were replaced by Panevėžys–Šiauliai–Mažeikiai route, coursing 8 times a day and combining Radviliškis–Daugavpils Railway and Libau–Romny Railway infrastructure.[10]
• February 16 – Lithuania stopped any cargo trade with Belarus via railway boarder point Stasylos-Bieniakoni, leaving only one railway cargo link between two countries in Kena-Hudahaj railway link point.[11]
• February 20 – LTG Cargo (part of Lithuanian Railways group) decreased transit numbers of goods moving between Russia's mainland and Kaliningrad Oblast through Lithuania by 7%, limiting Russia to 2.89 tonnes of goods in 2023.[12]
• February 26 – Lithuanian customs reinstated third party cargo check points at the Lithuania–Poland border, due increased cargo freight from non-EU countries via Poland and Lithuania to Belarus.[13]

• January 1 – new record set for warmest new year day in Lithuanian history with temperature rising to 14.9 C in Druskininkai municipality.[14]
• January 5 – Minija river broke through flood wall and flooded Stragnai II village.[15]
• January 14 – a sinkhole formed that was 17.2m in diameter in Užubaliai, Biržai District Municipality. It was the biggest sinkhole to appear in Lithuania within the last two decades.[16]
• January 22 – oil spill from discontinued railway factory polluted Nemunas river in Kaunas. Pollution stopped the following day.[17]
• January 30 – Nevėžis river flooded Justinava village.[18]
• March 4 – due strong winds record breaking 717 MW of wind electricity generated in Lithuania at the same time, setting a new record.[19]

• January 1 – new restriction come into action preventing minors under 18 years old to participate in any form of lottery.[20] Minors caught buying a lottery ticket would be issued with the fine up to 440 euros, while service provider selling lottery tickets to minors could be issued with up to 3000 euros fine.
• January 1 – changes in maternity and paternity time-off law came into action. The time off law was changed from 12-24 months to 18-24 months, the government pay-outs changed to direct pays of 100.54% based on parent's direct salary, single parents gained increased pay-outs.[21]
• January 31 – three homemade bombs was detected in Vilnius Levas Karsavinas school. All students and teachers evacuated, while special forces inspected the bombs.[22]

• January 13: Freedom Award by Seimas awarded to Ukrainian president Volodymyr Zelenskyy, presentation held in National Parliament.[25]
• January 23: Kristijonas Bartoševičius withdrew his membership in the national parliament Seimas.[26] On February 1, the official investigation started for allegations of paedophilia against Bartoševičius.[27]
• February 7: National Freedom Scholarship awarded to philosopher Vilius Bartninkas.[28]
• March 2: Politcial party of Russian Alliance in Lithuania was disestablished due rules violation after party failed to present list of party members three rounds in a row.[29] In addition 3 other parties was disestablished by submitting official request: Party of Political Prisoners, Nations Solidarity Union, Order and Justice.
• March 5: 2023 Lithuanian municipal elections took place in Lithuania with Social Democratic Party of Lithuania and Homeland Union winning the most seats in local municipalities.[30]
• March 30: Mykolas Majauskas submitted a request to stop his membership in a national parliament Seimas.[31]

• February 5–12 : 2023 Vitas Gerulaitis Cup
• February 15: Lazdynai Swimming Pool officially opened in Vilnius, Lithuania. Upon completion it is the biggest swimming sports arena in Lithuania and the Baltic states.[32]
• March 19–25: 2023 FAI F3P World Championships[33]
• May 19–21: 2023 EuroLeague Final Four
• 26 July – 5 August: 2023 World Glider Aerobatics Championships
• 27 August – 3 September: 2023 470 Junior World Championships
• 12–17 September: 2023 World Junior Modern Pentathlon Championships

• January 16 – Vladas Česiūnas, 82, sprint canoeist, Olympic champion (1972).[34]
• January 18 – Marius Zibolis, 48, goalball player, Paralympic silver medallist (2000, 2008).[35]
• January 20 – Grigorijus Kanovičius, 93, writer[36]
• February 15 – Algimantas Žižiūnas, 83, photographer.[37]