The Empress of Leng or god-empress is the ruler of the isle of Leng. She is worshiped by her people, the Lengii. The nearby YiTish worship a god-emperor.
According to legends, the empresses of Leng were known to have congress with the Old Ones, who, from time to time, ordered them to put all foreigners on the island to death.
Khiara the Great began the tradition of the god-empress taking both a Lengii husband and a YiTish one.
Prince Daemon Targaryen gave Princess Rhaenyra Targaryen a jade tiara said to have belonged to an Empress of Leng.