Perversion is a behavior that is a serious deviation from what is orthodox or normal.

Perversion may also refer to:

• Tendril perversion, a reversal of handedness in helical curves
• Pathological (mathematics), a particularly "badly-behaved" mathematical object
• Perverse incentives
• Perverse voting rules, where increasing a candidate's support can cause them to lose

• Perversion (album), a 1998 industrial album by Gravity Kills
• Perversion (film), a 1979 Brazilian exploitation film
• Perverse (album), a 1993 album by the British rock band Jesus Jones
• Perverts (album), a 2025 studio recording by Ethel Cain
• Pervert!, a 2005 film
• "Perversion", a song by Rob Zombie from Hellbilly Deluxe
• "Pervert", a song by the Descendents from I Don't Want to Grow Up