Mareridt is the second studio album by Myrkur, the black metal project of Danish musician and singer-songwriter Amalie Bruun. The album was released on 15 September 2017 through Relapse Records. Mareridt was recorded between Seattle, United States and Copenhagen, Denmark, and was produced by Randall Dunn. The album's title is Danish for 'nightmare', in reference to the frequent occurrences of sleep paralysis and nightmares which provided the inspiration for much of the album. The album's release was promoted with the release of at least three singles: "Måneblôt", "Ulvinde", and "De tre piker". The album received widespread acclaim from music critics upon its release.