A bladder diverticulum (BD) is a herniation of the bladder urothelium through the muscular bladder wall. As a result, BD presents as a thin walled bag, urine filled connected to bladder lumen through a neck or ostium. The clinical problem with bladder diverticula is their poorly empty during micturition which results in multiple lower urinary tract symptoms as well as recurrent urinary tract infections. Bladder diverticula can be grossly classified in two groups as follows: congenital or acquired with different age presentation and etiological factors in each one. Vast majority of BD occur in adults especially in men. Acquired BD, are commonly diagnosed in the setting of neurogenic dysfunction or bladder outlet obstruction, they use to be multiple, associated with trabeculated bladder and prostatic enlargement.