Objective: To evaluate morbidity and mortality among critically injured children with acute respiratory distress syndrome (ARDS) Design: Retrospective cohort study Setting: 460 Level I/II adult or pediatric trauma centers contributing to the National Trauma Data Bank Patients: 146,058 patients <18 years admitted to an intensive care unit with traumatic injury from 2007-2016 Interventions: None Measurements and Main Results: We assessed in-hospital mortality and need for postdischarge care among patients with and without ARDS, and hospital resource utilization and discharge disposition among survivors. Analyses were adjusted for underlying mortality risk (age, Injury Severity Score, serious brain or chest injury, and admission heart rate and hypotension), and year, transfer status, and facility trauma level designation. ARDS occurred in 2590 patients (1.8%). Mortality was 20.0% among ARDS patients versus 4.3% among non-ARDS patients, with an adjusted relative risk (aRR) of 1.76 (95% CI 1.52-2.04). Post-discharge care was required in an additional 44.8% of ARDS patients versus 16.0% of non-ARDS patients (aRR 3.59, 2.87-4.49), with only 35.1% of ARDS patients discharging to home versus 79.8% of non-ARDS patients. ARDS mortality did not change over the ten-year study period (aRR 1.