Hormonal ovarian disorders are uncommon during pregnancy and present primarily as ovarian masses. The two most common conditions are luteomas and hyperreactio luteinalis. The most common clinical manifestation is maternal virilization, which occasionally affects the fetus also. Rarely, an acute abdomen can result from hemorrhage or torsion of the mass. Because most of the entities regress spontaneously following delivery, a conservative management approach that includes preserving the ovaries is warranted.