In the past century, tens of millions of women and girls have disappeared in China, Hong Kong, and Taiwan. There are many reasons: the women variously were sold as "e;foreign spouses"e;; imprisoned for their political beliefs; taken to night clubs or massage parlors to work as "e;escorts"e;; provided as "e;comfort women"e; to soldiers; or murdered by female corpse dealers and sold as "e;ghost brides"e; to families looking to give their deceased sons wives in the afterlife. The youngest girls fell victim to infanticide, the tragic result of a "e;one child"e; law in a male-dominated society. As a result of the gender imbalance these disappearances created, countless young males now suffer from the "e;marriage squeeze,"e; remaining single without families of their own. This sociological study explores the institutional factors, develops a typology for these populations, and lays a foundation for the examination of lost populations in the future.