The 2018–19 Lietuvos krepšinio lyga, also called Betsafe-LKL for sponsorship reasons, was the 26th season of the top-tier level professional basketball league of Lithuania, the Lietuvos krepšinio lyga (LKL).

The Betsafe LKL championship started on 22 September 2018 and ended on 1 June 2019.

Žalgiris achieved their 21st title overall, ninth consecutive.

The top eight teams in the regular season standings, after playing their entire 36 game schedule, qualified for the playoffs in the quarterfinals, that was played in a best-of-three games format.

[1] Ten teams were granted licences for the season.