Thia is a genus of crabs

Thia may also refer to:

Tegeticula, a prodoxid moth genus invalidly described as Thia by H. Edwards in 1888 405 Thia, an asteroid Thia Megia (born 1995), a contestant in the 10th season of American Idol Henry Thia (born 1952), Singaporean actor and comedian Shawn Thia (born 1995), Singaporean actor

Thia, a character in Predator: Badlands

See also Thea (disambiguation) Theia (disambiguation)