Lithuania participated in the Eurovision Song Contest 2018 with the song "When We're Old" written by Vytautas Bikus. The song was performed by Ieva Zasimauskaitė. The Lithuanian broadcaster Lithuanian National Radio and Television (LRT) organised the national final "Eurovizijos" dainų konkurso nacionalinė atranka in order to select the Lithuanian entry for the 2018 contest in Lisbon, Portugal. The national final took place over nine weeks and involved 50 competing entries. The results of each show were determined by the combination of votes from a jury panel and a public vote. In the final, six artists and songs remained and "When We're Old" performed by Ieva Zasimauskaitė was selected as the winner.

Ieva Zasimauskaitė is a Lithuanian singer who represented Lithuania in the Eurovision Song Contest 2018 with her song "When We're Old". She had previously participated in the Lithuanian national selection for the Eurovision in 2013, 2014, 2016, and 2017, and participated again in 2022.