Gabrielius Landsbergis (born 7 January 1982) is a Lithuanian politician and diplomat who served as Lithuania's Minister of Foreign Affairs from December 2020 until November 2024 in the Šimonytė Cabinet.

After the party's second-place finish in the 2024 Lithuanian parliamentary election, Landsbergis stepped down as chairman and declined a proportional-list seat in the Seimas, stating his intention to take a break from politics.

In 2007, he joined the staff of the Lithuanian embassy in the Kingdom of Belgium and the Grand Duchy of Luxembourg, focusing on bilateral relations and diplomatic outreach.

[16] As Minister of Foreign Affairs from 2020, Gabrielius Landsbergis focused on strengthening Lithuania's strategic partnerships with the United States, NATO, and Taiwan.

He prioritized collective security, democratic values, and unity among allies to counter regional threats, including Russian aggression, while providing steadfast support for Ukraine.

[19] Following the 2024 Lithuanian parliamentary election, during which Landsbergis lost his single-member constituency, he resigned as party chair and declined a proportional-list seat, stating his intention to take a break from politics.

In response to Russian aggression, he urged NATO to establish clear red lines to counter hybrid warfare tactics, including disinformation campaigns and energy security threats.

He worked to unify EU member states in addressing these challenges, underscoring Lithuania's commitment to collective defense and democratic resilience.

[23] In June 2020, Gabrielius Landsbergis, together with his future deputy minister Mantas Adomėnas, outlined a proposed foreign policy approach towards China in an article advocating for greater alignment with democratic values and reduced reliance on authoritarian regimes.

[26][27] Additional cooperation included a €10 million technology transfer agreement with Teltonika, aimed at bolstering Lithuania’s tech sector.

He is the grandson of Vytautas Landsbergis, a key figure in Lithuania’s independence movement, former Chairman of the Reconstituent Seimas, and a founder of Sąjūdis.

Despite controversial ties during occupations by the Soviets and Nazis, he held various high-ranking positions, including Minister in the Provisional Government of Lithuania in 1941.