Surname เร่ง (Reng 
, เร่ง) , globally, is quite a rare last name. The surname เร่ง is habitual in Zambia, where it is quite a rare surname, Trinidad and Tobago, and Taiwan. Measured by absolute frequency, the name is most common in Malaysia, Taiwan, and Zambia. Also, เร่ง is the forename as well as the last name.