Surname รถไฟ (Train 
, รถไฟ 
, Rotfai ) , worldwide, is quite a rare family name. The last name รถไฟ is characteristic of the United Kingdom, where it is a rare surname, Australia, and France. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and France. Very seldom, รถไฟ is the forename as well as the last name.