The purpose of this paper is to describe a giant cell fibroma in the maxillary gingiva of an 11-year-old girl. After excisional biopsy, histological examination showed the presence of numerous giant, multinucleated, stellate-shaped cells dispersed throughout the fibrous tissue of the lamina propria. No recurrence was observed after the 1-year follow-up. Since this lesion is clinically similar to other non-neoplastic lesions and very uncommon in children, establishing a correct diagnosis can be difficult and achieved only based on specific histological characteristics. Thus, it is important that pediatric dentists have knowledge about this uncommon lesion.