Background Gracilis flap reconstruction (GFR) following abdominoperineal resection (APR) or proctocolectomy (PC) can reduce pelvic wound complications but has not been adequately assessed in the setting of immunosuppression, fistulous disease, and neoadjuvant chemoradiation. Methods Patients undergoing APR/PC with GFR were retrospectively analyzed with regard to perioperative characteristics, and morbidity was assessed. Results Patients underwent GFR for rectal cancer (n = 28), anal cancer (n = 3), inflammatory bowel disease (n = 13), or benign fistulizing disease (n = 1). 22.2% were chronically immunosuppressed, and 66.7% underwent preoperative chemoradiation. Twenty (44.4%) patients had minor wound complications, all treated nonoperatively. Nine patients had major complications with 4 patients requiring reoperation. The 4 threatened flaps were unilateral, and all were salvaged. Donor site morbidity was minimal. Patients with major complications were older (56 vs. 71 years, P = .030), and less likely to have pelvic drains (P = .018). Conclusion In high-risk perineal wounds, GFR offers durable reconstruction with acceptably low morbidity.