Sex determination may refer to:

• A sex-determination system, a biological system that directs the development of sexual characteristics in an organism
• Sexual differentiation in humans
• Sexual differentiation, the development of sexual characteristics in sexually reproducing organisms in general

• Determination of sex, the scientific or medical discernment of an infant's biological sex at birth
• Prenatal sex discernment, prenatal testing for the discernment of the fetal sex in humans
• Sex assignment, a colloquial term for the discernment of an infant's sex at birth
• Sexing, used by biologists and agricultural workers to discern the sex of livestock or other animals

• Gender, including biological sex
• Passing (gender), relating to the perception of gender, especially of transgender people
• Sexual dimorphism, a phenotypic difference between males and females of the same species, used in sex discernment
• Sex differences in humans

This disambiguation page lists articles associated with the title Sex determination.
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