The Latvian Second League ( or Otràlëga), known for sponsorship reasons as Altero.lv LIIGA since 2023, is the third tier of football in Latvia and is organised by the Latvian Football Federation.
There are 20 clubs in the Second League. There are 2 groups - A grupa and B grupa (formerly - West and East regions), with both containing 10 teams which must play home and away games against their regional opponents. From each group, 5 teams advance to the promotion round, whereas the other 5 teams advance to the relegation round. This stage of the league is typically contested from April to August.
The promotion round involves additional matches among the best 10 teams in the league, allowing two of the best teams to be promoted to the First League at the conclusion of the season. Additionally, the third-finishing team contests a two-legged playoff against the third-from-bottom-team in the First League, with the winner of the playoff securing an additional First League berth for the next season. From 2009 to 2017, the winners of the Latvian Second League in odd years also qualified for the UEFA Regions' Cup.
The relegation round, contested by the bottom 5 teams of each of the two divisions, sees the bottom 3 of those total 10 teams relegated to the Third League.