Thay

Thay may refer to:


 * Thầy Temple, a Buddhist temple in Hanoi, Vietnam
 * Thích Nhất Hạnh (1926 – 2022), nicknamed Thầy (Vietnamese: teacher), a Vietnamese monk and peace activist
 * Dalek Thay, a character in the Doctor Who TV series
 * Thays, a Pakistani TV drama serial
 * Thay (Forgotten Realms), a fictional magocracy ruled by the Red Wizards within the Dungeons & Dragons Forgotten Realms setting