Bone graft harvesting from the iliac crest is a common procedure. However, this procedure may be associated with a number of minor and major complications leading to morbidity. Herniation through an iliac crest defect is a rare complication of this procedure. We report the case of a 65-year-old obese lady who developed hernia through the iliac crest defect after bone graft harvesting. This was managed by repair of iliac crest defect with a Titanium mesh and reinforcement of the abdominal wall defect with a synthetic mesh.