The 2018 II Lyga season was the second season since return to two divisions system, the twentieth after switch to spring-to-fall format and the thirtieth overall after the restoration of Independence. The II Lyga is the third-tier of football in Lithuania. It is divided into the South Zone and the West Zone, each containing a total of thirteen clubs. The top two teams from each division are promoted to the I Lyga, while the last placed teams from both divisions are relegated to the appropriate regional division of the III Lyga, except in separately regulated cases for the B teams of higher tier clubs.