This article presents the feeling priming theory (FPT) of dreaming. According to the FPT, dreaming favors the motivation to avoid aversive anticipated events and to approach gratifying anticipated events. It is suggested that one component of anticipated emotions-anticipated feelings-is reproduced in dreams. Upon awakening and during the day, these anticipated feelings would remain activated (primed) in memory. Consequently, anticipated emotions would exert a greater influence on avoidance and approach behaviors, mainly through an increase in the intensity of anticipatory feelings (i.e., feelings of fear or hope/desire). This article comprises five main sections. First, the need for a new theory of the function of dreaming is addressed. Second, key constructs of the theory are described, including the constructs of "emotion" and "feeling." Third, a brief overview of the theory is presented. Fourth, seven hypotheses that constitute the core of the theory are discussed along with supporting evidence. Fifth, an explanation of nightmares based on the proposed theory is offered. The FPT represents an alternative to theories that attribute an emotion regulation function to dreaming. It offers a new perspective on the relationship between dreaming and waking emotions. In particular, the FPT does not label nightmares as dysfunctional. Instead, nightmares and other dysphoric dreams are hypothesized to result from the same processes as normal dreaming.