Cranial sonography was performed in 34 infants with proven meningitis and with clinical suspicion of its complications, utilizing the patent anterior fontanelle. Twenty-five patients showed various sonographic findings which included ventriculomegaly, echogenic sulci, subdural effusion, ventriculitis, infarction/cerebritis, cerebral oedema, porencephalic cyst, etc. Sonography is safe and cost-effective in diagnosis of complications, and management of pyogenic meningitis in infants.