Background: Bariatric surgery can have a significant impact on mental health and associated behaviors, due to hormonal changes following surgery and the introduction of a variety of stressors following surgery. Post-surgical stressors may include significant required behavioral changes, loss of pleasure associated with food consumption, and interpersonal stressors that are triggered by the surgical process. Understanding associations with post-bariatric surgery psychosocial outcomes and behaviors is vital for appropriate prevention and intervention. Methods: Adult patients (N = 52) at a moderate size bariatric surgery clinic in the Southeastern United States were assessed using the Beck’s Depression Inventory (BDI), State Trait Anxiety Inventory (STAI), Binge Eating Scale (BES), Yale Food Addiction Scale (YFAS), EAT-26, and body mass index (BMI) at baseline (pre-surgical) assessment and 3-months post-surgery. Linear regressions were used to evaluate the associations of 3-month psychosocial outcomes (each evaluated separately) and baseline psychosocial outcomes, controlling for baseline BMI, age, and gender. Results: Symptoms of depression 3-months after surgery were associated with baseline BMI (B = .32, p = .03) and an association with binge eating was trending toward significance (B = -.33, p = .08). Symptoms of state anxiety and trait anxiety 3-months after surgery were associated with gender (B = 10.37, p = .01; B = 9.02, p = .04). Symptoms of binge eating 3-months after surgery were associated with baseline symptoms of food addiction (B = 2.07, p = .02). An association of disordered dieting behaviors 3-months after surgery and baseline symptoms of food addiction was trending toward significance (B = -1.28, p = .05). Symptoms of food addiction 3-months after surgery were associated with baseline symptoms of food addiction (B = .25, p = .04). Discussion: These results indicate that pre-surgical intervention efforts should consider all baseline psychosocial predictors, as there are significant relationships across baseline and 3-months post-surgery psychosocial outcomes. These interventions are necessary to ensure post-surgical psychosocial wellbeing as well as prevention of disordered eating behaviors post-surgery.