Spigelian hernia is a rare entity and includes 0.1-2% of all abdominal wall hernias. Trauma is a rare cause of SH. To our knowledge, there are only five cases of trauma-related Spigelian hernia that have been reported in the literature. The current study reports a case of the largest spigelian hernia with trauma-related and adds the sixth case to the literature. The physical examination and imaging findings is supported spigelian hernia. A hernia sac of approximately 27 x 18 cm was identified. The hernia sac was opened, and it was observed that the hernia sac contained the omentum, small intestines and the sigmoid colon. The defect extended from the left lumbal region to the left inguinal area up to the pubic bone. The maximum size of the abdominal defect was 13 x 17 cm. For abdominal defect repair, a 30 x 30 cm monofilamented polypropylene mesh (sublay) was placed submuscularly beneath the fascia. Post-operative period was uneventful. Trauma constitutes an etiological factor in the formation of spigelian hernia. We believe that standardization criteria is necessary for the term giant spigelian hernia, so this will provide the more accurate results
