"Monophobia" is a song by Canadian electronic music producer Deadmau5 featuring Australian singer Rob Swire. It was released on July 13, 2018, as the first track on Deadmau5's EP and compilation album Mau5ville: Level 1. Prior to its release on the EP, an orchestral rendition of the song was featured on Deadmau5's Where's the Drop?. On release, the song charted on the US Dance/Electronic Songs chart, peaking number 19. A music video for the song was released on Deadmau5's YouTube channel on July 16, 2018.

Joel Thomas Zimmerman, known professionally as deadmau5, is a Canadian electronic music producer and DJ. He mainly produces progressive house and electro house music, though he also produces and DJs other genres of electronic music, including techno under the alias Testpilot. Zimmerman has received six Grammy Award nominations for his work.