Abstract: Collision tumor is the presence of two primary cancers simultaneously in a single anatomical site. It is extremely rare situation. Synchronous presentation of Follicular lymphoma with ovarian cancer in postmenopausal female is very rare, not mentioned in literature. Ovarian cancer is the most common culprit of gynecological cancer related mortality and follicular lymphoma is second most common lymphoma. Individualized treatment of both of the malignancies according to stage, prognostic score and performance status of the patient is important to optimize the outcome.