2023 LFF I Lyga
The 2023 LFF I Lyga was the 34th season of I Lyga, the second tier football league of Lithuania.
The champions were promoted to A Lyga, and also qualified for the 2024–25 UEFA Conference League second qualifying round by winning the 2023 Lithuanian Football Cup. The runners-up qualified for the A Lyga play-off. The fourteenth-placed team qualified for the [|I Lyga play-off], winning to retain their place in the league. The bottom two teams were relegated to the 2024 LF II Lyga, alongside Marijampolė City and Riteriai B
Teams
Participants
| Team | Town | Stadium | Capacity |
| Babrungas | Plungė | Plungė Stadium | 500 |
| Baltijos Futbolo Akademija | Vilnius | Širvintų stadionas | 500 |
| Be1 NFA | Kaunas | NFA Stadium | 300 |
| Ekranas | Panevėžys | Žemynos stadionas | |
| Garliava | Garliava | Stadium of the school of Adomas Mitkus | 500 |
| Jonava | Jonava | Central Stadium of Jonava | 2,040 |
| Kauno Žalgiris B | Kaunas | Kauno Žalgirio FA stadionas | 500 |
| Marijampolė City | Marijampolė | ||
| Minija | Kretinga | Kretingos miesto stadionas | 1,000 |
| Neptūnas | Klaipėda | Klaipėdos dirbtinės dangos aikštė | 1,000 |
| Nevėžis | Kėdainiai | Kėdainių miesto centrinis stadionas | 3,000 |
| Panevėžys B | Panevėžys | Žemynos progimnazijos stadionas | 500 |
| Riteriai B | Vilnius | LFF Stadium | 5,400 |
| Šiauliai B | Šiauliai | Šiaulių stadionas | 9,125 |
| TransINVEST | Vilnius | ||
| Žalgiris B | Vilnius | LFF Stadium | 5,400 |