Binge eating is present in obesity and clinical eating disorder populations and positively associated with poor health outcomes. Emotional eating may be related to binge eating, but relationships with emotional reactivity remain unexplored. The present study examined the relationships between negative and positive emotional eating and emotional reactivity in predicting binge eating. A cross-sectional study was employed using an online community sample in the United States. Participants (N = 258) completed surveys assessing negative (Emotional Eating Scale-Revised, depression subscale) and positive emotional eating (Emotional Appetite Questionnaire), negative and positive emotional reactivity (Perth Emotional Reactivity Scale), and binge eating (Binge Eating Scale). Six moderation analyses were calculated with negative and positive emotional reactivity (ease of activation, intensity, and duration) as moderators of the relationship between negative and positive emotional eating, respectively, and binge eating. Increased negative emotional eating was associated with increased binge eating when duration of negative emotional reactivity was 1 standard deviation above average (p < .001), but at 1 standard deviation below average (p < .001), increased negative emotional eating was associated with decreased binge eating. Increased positive emotional eating was associated with increased binge eating when intensity (p < .01) of positive emotional reactivity was 1 standard deviation above average and when activation (p < .05) of positive emotional reactivity was slightly above 1 standard deviation above average. Increased positive emotional eating was associated with decreased BE when intensity of positive emotional reactivity was 1 standard deviation below (p < .05) average. Emotional reactivity may uniquely impact the relationship between emotional eating and binge eating. Research and clinical implications for the contribution of negative and positive emotional eating and emotional reactivity on binge eating are discussed.