Breast torture is a BDSM activity in which sexual stimulation is provided through the intentional application of physical pain or constriction to the breasts, areolae or nipples of a submissive. It is a popular activity among the kink community. The recipient of such activities may wish to receive them as a result of masochism or they may have a desire to please a dominant who is sadistic. Those involved may also be motivated by breast fetishism. Mild breast torture such as light impact play on the breasts is also occasionally used outside of the BDSM context to provide stimulation and pleasure during conventional sex. While breast and nipple torture is usually performed on women, most techniques or methods may also be used on men.

As a paraphilia, breast fetishism is a sexual interest that focuses exclusively on the female breasts, and is a type of partialism. The term breast fetishism is also used in the non-paraphilic sense, to refer to cultural attention to female breasts and the sexuality they represent.