Objectives: Paramyxoviruses contribute to morbidity and mortality after lung transplant and are associated with bronchiolitis obliterans syndrome. Oral ribavirin has been used off-label for treatment of paramyxo - viruses in immunosuppressed patients; however, data supporting its use for this purpose are lacking. Materials and Methods:We conducted a retrospective review to evaluate clinical outcomes of lung transplant recipients infected with paramyxoviruses and received treatment with oral ribavirin at 2 tertiary referral centers. Patients who were diagnosed with paramyxo - virus infection by polymerase chain reaction testing between January 2011 and December 2014 and who received oral ribavirin were included. Clinical outcomes included pulmonary function testing, infection severity, and adverse events related to treatment. Results: Twenty-six patients were diagnosed with a paramyxovirus and received oral ribavirin. The changes in mean forced expiratory volume 1 second from preinfection to infection onset and from infection onset to postinfection were significant (1.79 ± 0.13 to 1.61 ± 0.12 L and 1.61 ± 0.12L to 1.74±0.12 L; P = .0001). Similar results were seen in subgroup analysis when respiratory syncytial virus and parainfluenza infections were evaluated independently. Conclusions: Use of oral ribavirin for treatment of paramyxovirus infections in lung transplant recipients was safe and associated with recovery of lung function.