In females, the round ligament connects the uterine cornu to the vulva at one end and traverses the inguinal canal at the other. The canal of Nuck is a small patent pouch of parietal peritoneum that runs along the length of this ligament. The canal of Nuck gets entirely obliterated during the first year of life, and the inability to do so might result in a hydrocele or an inguinal hernia. Hydrocele of the canal of the Nuck is difficult to diagnose because the diagnosis is rarely made solely on the basis of clinical signs. However, the results of a preoperative USG might be helpful. The information and knowledge regarding hydrocele of the canal of Nuck is limited, so this case report will benefit the existing literature. Keywords: Hydrocele of the Canal of Nuck, Round ligament, Inguinal Swelling