Member of the European Parliament (2014–2016)

On 8 January 2014, Landsbergis was selected as leading candidate for the Homeland Union's list in 2014 European Parliament election,^[5] and was a Member of the European Parliament between 2014 and 2016.

Landsbergis served on the Committee on International Trade and on the Subcommittee on Security and Defence. In addition to his committee assignments, he was a member of the European Parliament Intergroup on Children's Rights.^[6]

On 25 April 2015, Landsbergis was elected as Chairman of the Homeland Union, defeating former speaker of the Seimas Irena Degutienė in the contest.^[7]

When Landsbergis asked to meet with Russian MPs and officials in Moscow in 2015 amid the Russo-Ukrainian War, his request was denied.^[8]

Member of Government (since 2016)

In November 2015, Landsbergis was selected to stand in Žaliakalnis single-member constituency to the upcoming parliamentary election.^[9] Due to the redrawing of single-member constituencies' boundaries, Landsbergis was proposed to the newly established Centras–Žaliakalnis single-member constituency (Centras single-member constituency candidate Gintarė Skaistė joined the multi-member list instead).^[10]

By March 2016, Landsbergis resigned from the European Parliament. In the 2016 parliamentary elections, Landsbergis was the only Homeland Union's candidate to win a single-member constituency in Kaunas.^[11] After these elections, Landsbergis proposed to hold a leadership election, which he won.

Landsbergis ranked among the 5 wealthiest members of the 2016–2020 Seimas primarily due to his wife's chain of private schools and kindergartens which are partly funded from public sources, with estimated wealth of €19.9 million.^[12] Questions have been raised about suspicious business transactions in the context of a potential conflict of interest but the matter did not go to court, although the National Tax Inspection did start a formal investigation.^[13]