Fibro-osseous lesions (FOLs) are the group of lesions which are recognized to affect the jaws and the craniofacial bones which are known for their confusing area in diagnostic pathology. The disease involves the normal architecture of bone is replaced by fibrous tissue containing varying amount of foci of mineralization. The article pitches a bright on the various classification systems are given for FOLs and also highlights the role of radiographic & Histopathological features in the diagnosis of FOLs, which will qualify us to adopt a uniform vocabulary and to aid the Diagnostic and surgical pathologist in the diagnosis of this diverse group of maxillofacial lesions.