This chapter discusses management of adnexal tumors, where the adnexa are composed of the ovary, tube, broad ligament, and the remaining embryological structures within the broad ligament. The endometrioma is also counted among the most common ovarian tumors, even if its origin is not the ovary. Dermoid cyst or cystic mature teratoma is the most frequent neoplasm of the ovary. Functional cysts can experience internal hemorrhage, torsion, or rupture, and surgery is warranted. Fibroma and fibrothecoma are common solid tumor in postmenopausal women. Management of adnexal tumors can be expectant or surgical. In some cases, the surgical indication is obvious and cannot be postponed. Radical treatment is reserved for highly suspicious masses, solid tumors, and adnexal tumors in postmenopausal women. Clinical or ultrasound characteristics of malignancy warrant surgical exploration and the participation of a gynecologic oncologist on the team. Surgical management is pursued with adhesiolysis, if adnexal adhesions are identified.