The Flag of the Royal Thai Police, with its official seal, known as trah lohkhen tamruat, and which consists of a sword and shield decorated with the face of a yak or singh, amidst a pattern of flowers or kranok motifs.

However, it is not limited to particular detail and hence can be variable, also in size and colour, as can be seen in the differnt pictures. The face on the shield is separately referred to as Jaturamuk.

In the past a similar kala (fig.) or kirtimukha-like face (fig.) was carved on the four porticos of a prasat hin, in the flour cardinal directions, with the belief that it protected the palace against evil entering from either direction (fig.).

Though the sword and shield seal was only designed in 1897 by Prince Momchao Prawich Chumsai, the Jaturamuk or yak-like face can already be seen on the shield of security officers during the Ayutthaya Period, i.e. between 1350 and 1767 (fig.).