Cognomen Tuar (Tuar 
) , across the world, is a rare family name. The family name Tuar is habitual in South-eastern Asia, particularly Singapore, where it is a rare surname, Indonesia, where it is a very rare surname, and Malaysia. Measured by absolute frequency, the name is most common in Indonesia, India, and Malaysia. More prevalently, Tuar is the forename as well as the last name.