In Cauda Venenum (Latin for "Poison in the tail") is the thirteenth studio album by Swedish progressive metal band Opeth, released on 27 September 2019 through Moderbolaget and Nuclear Blast.

[5] At 67 minutes and 57 seconds, it is the band's longest studio album.

It is also the band's last album to feature drummer Martin Axenrot before his departure in 2021.

At Metacritic, which assigns a normalized rating out of 100 using reviews from mainstream critics.

The album received an average score of 85, based on 10 reviews, which indicates "universal acclaim".