Blunt and penetrating abdominal traumas are an important source of morbidity and mortality in the western world, especially in the young populations. Although most attention during the (primary) diagnostic process is directed toward the detection of internal injuries of the abdomen, blunt or penetrating trauma to the abdomen may result in defects of the abdominal wall. The diagnosis of traumatic abdominal wall hernia (TAWH) is rarely made. Morbidity due to TAWH, however, may be significant. In this article we report the delayed diagnosis of a TAWH in two patients after abdominal wall trauma and present a review of the literature concerning the diagnostic workup and treatment.