C
- Camel toe
- Camgirl
- Candaulism
- Capacitation
- Car sex
- Carlos Morales (pornographic actor)
- Carrageenan
- Cass Identity Model
- Casting couch
- Castration
- Casual relationship
- Casual sex
- Catfight
- Catholic sex abuse cases
- Catholicism and sexuality
- Celibacy
- Certified Sex Therapist
- Chi Nei Tsang
- Chickenhawk (gay slang)
- Chickenhead (sexuality)
- Child-on-child sexual abuse
- Child sex
- Child sex tourism
- Child sexual abuse
- Child sexuality
- Childbirth
- China Multi-Generational Panel Dataset – Liaoning (CMGPD-LN), 1749-1909
- Choice USA
- Chremastistophilia
- Christian side hug
- Christianity and sexual orientation
- Chronophilia
- Cicisbeo
- Circle jerk (sexual practice)
- Circumcision
- Clinical vampirism
- Clitoris
- Clitorism
- Clothed female, naked male
- Clothed male, naked female
- Clothing fetish
- Club wear
- Clubwear
- Co-sleeping
- Cock-ring
- Cock and ball torture (sexual practice)
- Cock tease
- Cockle bread
- Cogender
- Coitus à unda
- Coitus reservatus
- Compassionate love
- Compersion
- Compulsory sterilization
- Concept Foundation
- Concubinage
- Condom
- Condom fatigue
- Condoms, needles, and negotiation
- Conjugal Love
- Conjugal visit
- Conscience clause (medical)
- Consecrated virgin
- Constantine (son of Leo V)
- Constitutional growth delay
- Contraception
- Contraception in the Republic of Ireland
- Contraceptive security
- Coolidge effect
- Coprophilia
- Corrective rape
- Cortical reaction
- Couple costume
- Courtly love
- Courtship
- Courtship disorder
- Covert incest
- Crab louse
- Creampie
- Creampie (sexual act)
- Cretan pederasty
- Crime of passion
- Criminal transmission of HIV
- Cross dressing
- Cruising for sex
- Crush fetish
- Crystallization (love)
- Cuban National Center for Sex Education
- Cuckold
- Cuddle party
- Cum shot
- Cunnilingus
- Cunt
- Cupboard love
- Curial response to Catholic sex abuse cases
- Cutty-sark (witch)
- Cyber Seduction: His Secret Life
- Cyber sex
- Cybersex
- Cytoplasmic incompatibility
- Cytoplasmic transfer
Read more about this topic: Index Of Human Sexuality Articles