The 1942–43 LFF Lyga was the 22nd season of the LFF Lyga football competition in Lithuania. Tauras Kaunas won the championship.
Kaunas Group
Vilnius Group
Šiauliai Group
Panevėžys Group
Sūduva Group Sveikata Kybartai 3-0 Dainava Alytus
Jonava Group LFLS Jonava
Žemaitija Group Džiugas Telšiai
Quarterfinal Gubernija Šiauliai 3-0 Džiugas Telšiai LGSF Vilnius 3-1 LFLS Jonava Tauras Kaunas 5-0 Sveikata Kybartai
Semifinal MSK Panevėžys 2-1 LGSF Vilnius Tauras Kaunas 5-1 Gubernija Šiauliai
Final Tauras Kaunas 4-1 MSK Panevėžys
References RSSSF