The third season of the Japanese science fiction action anime TV series Log Horizon premiered on NHK Educational TV January 13, 2021, and concluded on March 31, 2021, with a total of 12 episodes.

The series is based on the novels written by Mamare Touno.

The season was originally scheduled to premiere in October 2020, but had been delayed to January 2021 due to the COVID-19 pandemic.

[1] Season 3 is titled Log Horizon: Destruction of the Round Table (Japanese: ログ・ホライズン 円卓崩壊, Hepburn: Rogu Horaizon Entaku Hōkai), named after the title of Volume 12 of the web novel series.

[2] The opening theme is "Different" by Band-Maid and the ending theme is "Blue Horizon" (ブルー・ホライズン, "Burū Horaizun") by Miyu Ōshiro (大城美友, Ōshiro Miyu).