Organizational commitment has been linked to several important outcomes, including employee turnover and work performance. Despite that the antecedents of organizational commitment have been a subject of research for several decades, the relation between personality and organizational commitment is relatively unexplored. The aim of this study was to examine the relations between the personality traits in the five-factor model (Conscientiousness, Agreeableness, Neuroticism, Openness to Experience, and Extraversion) and organizational commitment. Personality was measured by the IPIP30 questionnaire. Three types of organizational commitment (affective commitment, continuance commitment, and normative commitment) were measured by the Organizational Commitment Questionnaire. The respondents (N = 303) consisted of workers from both the public and the private sector in Sweden. Multiple linear regression analyzes showed that Conscientiousness was statistically significantly related to affective commitment. Agreeableness, Neuroticism, and Extraversion were statistically significantly related to continuance commitment. Practical implications of the results as well as future research directions are discussed.