Crimes against nature is a term that usually refers to sodomy (anal
sexual intercourse) or bestiality (sex with an animal).
A crime against nature may also refer to:
- Buggery - anal intercourse between a man and either a man or a woman.
- Pederasty - buggery committed between a man and a young boy.
- Fellatio - the oral stimulation of the male sex organ.
- Cunnilingus - the oral stimulation of the female sex organ.