Insulin-related errors result in nearly 100,000 emergency department visits annually in the United States, with 30% resulting in hospitalization. It is unclear if published guidelines and strategies for reducing these errors have been effective; therefore, this review sought to identify interventions to reduce insulin errors in home and hospital settings. Three themes emerged: technology, education, and policy. Understanding these findings may help clinicians and patients to decrease insulin administration errors and help researchers develop and evaluate future studies targeting insulin-related errors.