The term sexual positions refers to the different ways in which couples physically position themselves for sexual intercourse. On the one hand, popular mythology propagates the belief that the man-on-top position is the only normal and acceptable coital position; on the other is the myth that not only are there scores of sexual positions, but that no one may be deemed a competent lover until he or she has mastered them all.

The myth further suggests that the more physically challenging the position, the greater the sexual satisfaction will be. None of these myths is true. No special significance is attached to any particular position, and competence in lovemaking is measured by fulfillment, not by the extent of one's sexual repertoire.

The most common sexual positions are man-on-top, woman-on-top, side-by-side, and rear-entry. Some heterosexual couples and some gay men also practice anal intercourse. They may all be modified by performing them lying down, sitting, standing, kneeling, or any combination of these. Each couple's inventiveness and comfort level determines their choice of positions.