Giant Cell Reparative Granuloma is a reparative process in mandible. A case of Giant Cell Reparative Granuloma of Maxilla in a 15 years old female is reported. Tumour is very rare in maxilla and more often is diagnosed as a giant cell tumour. The case is reported on account of its rarity in maxilla and dilemma in differentiating it from other giant cell lesions. Differentiation is only based on the clinical test histopathological examination.