The 2023 A Lyga, for sponsorship reasons also called Optibet A lyga was the 34th season of the A Lyga, the top-tier football league of Lithuania. The season began on 3 March 2023 and concluded on 12 November 2023.
The winners (PanevÃÂà ¾ys) qualified for the 2024âÂÂ25 Champions League first qualifying round. The runners-up (à ½algiris) and third-placed team (à  iauliai) qualified for the 2024âÂÂ25 Conference League first qualifying round. The ninth-placed team (Dà ¾iugas) qualified for the A Lyga play-off, winning to retain their place in the league. The bottom-placed team (Riteriai) were relegated to the 2024 LFF I Lyga.
The league consisted of ten teams, nine of which remained from the previous season. à ½algiris entered the season as defending champions. Jonava were relegated and replaced by Dainava, returning after one year's absence. Ninth-placed Dà ¾iugas remained in A Lyga after winning the playoff against I Lyga's Neptà «nas.
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The ninth-placed club (Dà ¾iugas) faced the second-placed club from the 2023 LFF I Lyga (Be1 NFA) for the final place in the following season's A Lyga.