Objective: To examine the roles of attachment, social support, and coping as psychosocial correlates in predicting happiness in people with spinal cord injuries. Design: Quantitative descriptive research design using multiple regression and correlation techniques. Participants: 274 individuals with spinal cord injuries. Outcome Measures: Happiness as measured by the Subjective Happiness Scale. Results: Functional disability and psychosocial correlates including coping, attachment styles, and social support were found to be associated with happiness scores. Functional disability was found to have a large negative effect on happiness and the effect was significantly reduced after taking into consideration the effect of positive psychology factors. Conclusion: Positive psychology variables are important for happiness and subjective well-being, and happiness in turn is related to better quality of life. The negative relationship between functional disability and happiness can be mediated by attachment, social support, and coping. Rehabilitation professionals should deemphasize negative characteristics related to poor psychological adjustment and focus on positive human traits and positive psychology interventions for people with disabilities.