Leiomyoma is a smooth muscle tumor which rarely turns into malignancy. This is an unusual case report which presents leiomyoma on gingiva with osseous involvement. This case highlights the importance of histopathological examination for the proper diagnosis of any gingival growth. A 28-year-old female patient reported with localized gingival enlargement. The surgical excision was conducted and excised tissue was sent for histopathological examination. On the basis of clinical and histopathological examination, the diagnosis of leiomyoma was made. Leiomyoma reported low recurrence rate in previous literature. However, this lesion recurred within 15 days. After recurrence, the patient was referred to the oncology center for further evaluation and treatment.