Richter’s hernia is a rare but serious surgical emergency involving the entrapment or strangulation of part of the bowel’s circumference in the hernial orifice, often without causing complete luminal obstruction. This case report describes a man in his 70s presenting with a 3-day history of abdominal pain and vomiting, despite normal bowel movements. Blood results revealed raised inflammatory markers, and computed tomography imaging suggested small bowel obstruction due to an incarcerated left inguinal hernia. Emergency surgery confirmed a Richter’s hernia with a strangulated but viable bowel loop. Early surgical intervention led to a positive outcome. This case underscores the importance of high suspicion, early referral, and timely imaging in managing Richter’s hernia to prevent severe complications, such as gangrene and perforation. Despite the absence of obstructive symptoms, early surgical intervention is critical when there is clinical concern regarding strangulation.