M
- Macrophilia
- Magnus Hirschfeld Medal
- Making out
- Making sense of abstinence
- Male accessory gland
- Male infertility
- Male prostitute
- Mama-san
- Mammary intercourse
- Mandarin Chinese profanity
- Marital rape
- Marquis de Sade
- Marriage
- Marriage and Morals
- Marriageable age
- Married Love
- Marshall Applewhite
- Mast Seeding
- Mast year
- Masters and Johnson
- Masters and Johnson Institute
- Masturbate-a-thon
- Masturbation
- Mat (Russian profanity)
- Maternal bond
- Maternal health
- Mating
- Mating system
- Mechanics of human sexuality
- Mechanics of sex
- Mechanophilia
- Media coverage of Catholic sex abuse cases
- Medical abortion
- Medical fetishism
- Meet market
- Megaspore
- Men who have sex with men
- Ménage à trois
- Menarche
- Menstruation
- Mental roots of sexual orientation
- Meretrix
- Methyl cellulose
- Mettā
- Michael Uebel
- Michel Foucault
- Mighty Jill Off
- Mile high club
- Miley Jab Hum Tum
- MILF Island
- MILF pornography
- Minors and abortion
- Mirror stage
- Misattribution of arousal
- Misogyny
- Mister Leather Europe
- Mistress (lover)
- Mixed boxing
- Modern primitive
- Monique Wittig
- Monocarpic
- Monogamy
- Monosexuality
- Mosley v News Group Newspapers
- Mosley v United Kingdom
- Motorboating (sexual act)
- Muscle worship
- My Mom's Having a Baby
- Mysophilia
Read more about this topic: Index Of Human Sexuality Articles