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OBJECTIVE To determine clinical correlates of moderate to severe bronchopulmonary dysplasia (BPD) in preterm infants following surgical necrotizing enterocolitis (NEC). METHODS A retrospective, single-center cohort study comparing patients with moderate to severe BPD to patients with non/mild BPD among surgical NEC infants. BPD was defined by NIH 2001 consensus definition Results: Of 92 consecutive neonates with surgical NEC, 77% (71/92) had moderate/severe BPD and 22% (21/92) had non/mild BPD. The patent ductus arteriosus (PDA) was significantly higher in those developing moderate/severe BPD (67.6% [48/71]) than non/mild BPD (28.6% [6/21]; p=0.001). Postoperatively,infants with moderate/severe BPD had more severe AKI (67.6% [48/71] vs. 28.6% [6/21]; p=0.001), were intubated longer (40.5 days [IQR 12, 59] vs. 6 days [IQR 2, 13]; p<0.001), received more parenteral nutrition (109 days [IQR 77, 147] vs. 55 days [IQR 19, 70]; p<0.001), developed higher surgical morbidity (46.5% [33/71] vs. 14.3% [3/21]; p=0.008), had more intestinal failure (62.5% vs. 13.3%; p<0.001), required a longer hospital stay (161 days [IQR 112, 186] vs. 64 days [IQR 20, 91]; p<0.001), and were more likely to need home oxygen. In a multivariable analysis, lower birth weight (OR=0.3, [95% CI 0.1-0.5]; p=0.001), patent ductus arteriosus (OR=10.3, [95%CI 1.6-65.4]; p=0.014) and longer parenteral nutritional days (OR=8.8; [95%CI 2.0 -43.0]; p=0.005) were significantly and independently associated with higher odds of moderate/severe vs. non/mild BPD. CONCLUSION Development of moderate/severe BPD occurred in the majority of preterm infants with surgical NEC in this consecutive series. Preterm infants with moderate/severe BPD were more likely to have a PDA before NEC. Development of moderate/severe BPD was associated with significantly greater burden and duration of post-operative morbidity following surgical NEC. Identifying surgical NEC infants at increased risk of moderate/severe BPD and developing lung protection strategies may improve surgical NEC outcomes.