The 2019 LFF I Lyga was the 30th season of the I Lyga, the second tier association football league of Lithuania. The season began on 22 March 2019 and finished in 27 October 2019.
The final decision on the number of teams in 2019 LFF I Lyga was made by the Lithuanian Football Federation executive committee meeting on 15 March 2019.[3] Exceptions were applied to FK Jonava (financial criteria were not met), FC Kupiškis (sporting criteria were not met) and FA Šiauliai (legal criteria were not met) and the teams were allowed to start in the 2019 LFF I Lyga championship, pending criteria to be met by June. The 16 team championship started on 22 March 2019.
The applications for the 2019 LFF I Lyga licenses were also received from FK Sveikata Kybartai, FM Ateitis and FK NFA but licenses were not granted. FK Utenis Utena shareholders voted to withdraw from participation in 2019 LFF I Lyga, and the club will participate in 2019 LFF II Lyga. FK Koralas Klaipėda was dissolved in 2018.