Steroid cell tumors occur in <0.1% of all ovarian tumors, and steroid cell tumors, not otherwise specified occur in 80% of those steroid cell tumor cases. In the Philippines, there is only one published case of a steroid cell tumor, not otherwise specified. This is a case of a 25-year-old nulligravid, who manifested with heavy menstrual bleeding accompanied by hirsutism, and deepening of the voice. Ultrasound revealed the left ovary with a well-circumscribed, hypoechoic solid mass, measuring 36.8 mm × 34 mm × 32.1 mm with benign features on the International Ovarian Tumor Analysis. The patient underwent a left salpingo-oophorectomy with frozen section. Final histopathology showed a steroid cell tumor, not otherwise specified. Prompt surveillance and increasing awareness of steroid cell tumors, especially those that manifest with abnormal uterine bleeding and virilization, may initiate prompt and proper management that can have an impact on the quality of life of the patient.