Lock End LOL (stylized as LOCK END LOL) is the second and final single album by South Korean girl group Weki Meki.

Lock End LOL was released as a digital download on May 14, 2019, through several music portals, including MelOn and iTunes.

[5][6] The album placed at number 24 for the month of May with 12,373 physical copies sold.

[8] The reissue debuted at number 7 on the Gaon Album Chart for the week ending August 17.

[10][11] The album placed at number 26 for the month of August with 9,149 physical copies sold.