Femdom (from female domination) is a term referring to a woman taking a dominant role over a man or another woman, primarily within a sexual context. It manifests as a man assuming a demonstratively submissive position (slave, servant) in relation to a woman, who is addressed as "Mistress," "Goddess," or "Lady."

Femdom is a core component of the BDSM subculture and often functions as one of its primary practices. In male-female pairings, partners experience a complex set of specific moral and psychological sensations. This psychological pleasure arises from expanding the spectrum of emotional experiences during sexual contact. Practices may include the use of a strap-on for female-to-male penetration.

The theme of Femdom is frequently found in erotic photography and fine arts. Additionally, elements of Femdom are often used as plot devices in literature and cinema.