The Post-Apocalypto Tour was a concert tour by American comedy rock band Tenacious D. The tour was in support of the band's YouTube animatic series Tenacious D in Post-Apocalypto and its accompanying soundtrack album Post-Apocalypto, which were released in November 2018. The tour began on November 3, 2018 and ended on February 26, 2020. This tour surpassed the band's 2012 Rize of the Fenix Tour as the longest Tenacious D tour in October 2019 with over 1.8 million people.

Tenacious D in Post-Apocalypto is an American animatic episode series by Jack Black and Kyle Gass as Tenacious D, released independently through the band's YouTube channel. On November 8, 2018, all of the episodes were uploaded as one video branded "full movie" which, as of February 2024, has since been removed from YouTube for violating their policy on nudity or sexual content.