Cerebral venous thrombosis has variable and nonspesific presentation and this makes it relatively hard to diagnose. Dehydratation, hypercoagulable state, tumour invasion of sinus venosus, oral contraceptive usage, pregnancy, puerperium,head trauma, vasculitis, otitis ,sinusitis, infections such as; chronic meningitis and subdural empyema, hematologic and connective tissue diseases are the known risk factors for development of cerebral venous thrombosis. However, in literature, cerebral venous thrombosis associated with iron deficiency anemia is very rare, especially in adults. We aimed to present one case of transverse sinus thrombosis with intracranial hypertension symptoms, which has no underlying cause other than severe hypochro-mic microcytic anemia due to iron deficiency. We present two other cases with cerebral venous thrombosis caused by iron deficiency anemia followed in our clinic, too.