Background: Bilateral involvement of ovarian tumors is well known. Very few cases of synchronous bilateral primary ovarian tumors of different histologic subtypes are reported. Here we report a rare case of a left ovarian dysgerminoma with a right ovarian teratoma in an 11 year old girl. Case Report: Patient presented with abdominal pain since one month. A lump of size 15×10 cm was occupying the whole abdomen. CECT abdomen showed a solid-cystic, heterogeneous mass arising from the pelvis. Alpha-fetoprotein (AFP), ß-human chorionic gonadotropin (ß-HCG) and lactate dehydrogenase (LDH) were elevated. Bilateral salpingo-oopherectomy with infra-colic-omentectomy was performed. Histopathology revealed a left ovarian dysgerminoma and a right ovarian teratoma. Conclusion: In pediatric population, germ cell tumors are the commonest type. Concurrent tumors can be synchronous, independently derived, non-metastatic or metastatic. In adolescent patients, a timely diagnosis is essential as bilateral ovarian tumors pose challenges regarding ovarian conservation and reproductive future.