This chapter provides detail description of sonography of scrotum and testes. Chapter has 39 well illustrated diagrams and pictures. Technique for scrotum and testes, hydrocele, scrotal cysts, epididymo-orchitis, torsion testes, varicocele, cryptorchidism, testicular microlithiasis, testicular trauma, testicular tumors, extratesticular masses on ultrasound of scrotum and testes are described in detail with the help of excellent ultrasonographic illustrations and pictures. 24 references are given at the end of the chapter for further reading