Background and Objectives: Inguinal hernia (IH) is a usual finding in men with prostate cancer (PCa) due to their similar risk factors, such as age, gender, and smoking. This study aims to present a single institution’s experience with simultaneous IH repair (IHR) and robotic-assisted radical prostatectomy (RARP).Materials and Methods: We retrospectively reviewed 452 patients who underwent RARP between January 2018 and December 2020. A total of 73 patients had a concomitant IHR with a monofilament polypropylene mesh. Patients with bowel in the hernia sac or recurrent hernia were excluded.Results: The median age and the American Society of Anesthesiologists (ASA) score were 67 years (inter-quartile range (IQR) 56–77) and 2 (IQR 1–3), respectively. The median prostate volume and preoperative prostate-specific antigen (PSA) were 38 mL (IQR 25.0–75.2) and 7.8 ng/mL (IQR 2.6–23.0), respectively. The surgery was successfully performed in all cases. The median overall and IHR operative time were 190.0 (IQR 140.0–230.0) and 32.5 (IQR 14.0–40.0) minutes, respectively. The median estimated blood loss and length of hospital stay were 100 mL (IQR 10–170) and 3 days (IQR 2–4), respectively. Only five (6.8%) minor complications occurred after surgery. At the 24-month follow-up, no cases of mesh infection, seroma formation, or groin pain were recorded.Conclusions: This study confirmed the safety and efficacy of performing simultaneous RARP and IHR.