This study explores the effect of organizational factors, such as work unit size, diversity of services offered, geographic coverage, managerial culture, and staff qualifications on the degree to which middle managers in Swedish social services use evidence-based interventions. An ordered generalized logistic regression shows that most of these organizational factors are positively related to the use of evidence-based interventions above and beyond managers’ individual-level characteristics, such as interest in evidence-based interventions, education, gender, and managerial experience. Furthermore, a social work qualification is the only one of these individual-level controls that appears related to the use of evidence-based interventions.