"Parasite Eve" is a song by British rock band Bring Me the Horizon. Produced by the band's vocalist Oliver Sykes and keyboardist Jordan Fish and written by the entire band, it was released as the second single from the group's 2020 commercial release Post Human: Survival Horror on 25 June 2020. The song samples "Erghen Diado" written by Petar Lyondev and performed by the Bulgarian Female Vocal Choir; Lyondev is credited as a co-writer. "Parasite Eve" is the band's second Top 20 single hit in the Scottish Singles Chart.