We report an eight years female child of symptomatic giant Rathke's cleft cyst extending from right parasellar, paraventricular region to right fronto-temporo-parietal cortical surface which is an unusual site for Rathke's cyst. MRI Brain scans of patient who presented with diminution of vision in right eye with headache and vomiting revealed a large cystic mass in right parasellar, paraventricular region with peripheral enhancement and midline shift. In this case, we performed the right fronto-temporo-parietal craniotomy with drainage and marsupilization of cyst wall. Histopathologically, it was inflamed Rathke's cleft cyst with focal epithelial metaplasia.