The occurrence of solitary fibrous tumor in the orbit is rare. The following is a report on the case of a 24-year-old man presented with painless, progressive proptosis of the right eye for the duration of 1 year. Computed tomography and magnetic resonance imaging demonstrated a well-circumscribed soft tissue mass with gadolinium enhancement located in the superomedial aspect of the right orbit. The patient underwent complete tumor removal through a right fronto-orbital approach, with a pathological diagnosis of solitary fibrous tumor. Postoperatively, the patient was symptom-free. From review of the literature on orbital solitary fibrous tumor, emphasis should be placed on complete tumor resection and continuous follow-up monitoring of the tumor.