Last name เท็จ (Thet 
, Fales 
, Falsal 
) , all around the world, is a widespread cognomen. The last name เท็จ is habitual in Mongolia, where it is a prevalent surname, Myanmar, where it is a widespread surname, and Singapore, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Myanmar, Mongolia, and the United States. Also, เท็จ is the forename as well as the last name.