支配与臣服（英语：Dominance and submission），是涉及色情的事情或生活情况中，一个人臣服于另一个人的风俗、礼仪、行为。

在支配与臣服中，身体接触并不是必须的，可以通过电话，电子邮件或其他联络方式进行。如果进行身体接触，有时会变成施虐与受虐。在支配与臣服中，双方都享受支配或被支配，处于优势的一方成为支配方，处于从属地位的一方被称为臣服方。

Dominance and submission (also called D/s) is a set of behaviors, customs, and rituals involving the submission of one person to another in an erotic episode or lifestyle. It is a subset of BDSM.

Physical contact is not necessary, and D/s can be conducted anonymously over the telephone, email, or other messaging systems. In other cases, it can be intensely physical, sometimes crossing into sadomasochism. In D/s, both parties take pleasure or erotic enjoyment from either dominating or being dominated. Those who take the superior position are called dominants—Doms (male) or Dommes (female)—while those who take the subordinate position are called submissives—or subs (male or female). A switch is an individual who plays either role. Two switches together may negotiate and exchange roles several times in a session. "Dominatrix" is a term usually reserved for a female professional dominant who dominates others for pay.