Rainier Fog is the sixth studio album by American rock band Alice in Chains, released on August 24, 2018, through BMG, the band's first release on the label. The title was inspired by Mount Rainier, a volcano that overlooks the Seattle-Tacoma metropolitan area, and the title track is a tribute to the Seattle music scene. This is the band's third album with William DuVall sharing lead vocals with Jerry Cantrell, and the first Alice in Chains album in 22 years to be recorded in their hometown of Seattle. The album was partially recorded at Seattle's Studio X, the same studio where the band recorded their 1995 self-titled album. Rainier Fog is also Alice in Chains' third collaboration with producer Nick Raskulinecz, marking their first time recording three full-length albums with the same producer.

Alice in Chains is an American rock band formed in Seattle, Washington, in 1987. Since 2006, the band's lineup has comprised vocalist/guitarists Jerry Cantrell and William DuVall, bassist Mike Inez and drummer Sean Kinney. Vocalist Layne Staley and bassist Mike Starr are former members of the band, having died in 2002 and 2011, respectively. The band took its name from Staley's previous group, Alice N' Chains. Often associated with grunge music, Alice in Chains' sound and style is deeply rooted in heavy metal music. The band is known for its distinctive vocal style, which often included the harmonized vocals between Staley and Cantrell, making Alice in Chains a two-vocal band.