Family name Трэйнор (Traynor 
, Трэйнор) , in the world, is a common surname. The cognomen Трэйнор is characteristic of Ireland, where it is quite a common surname, the United Kingdom, where it is quite a rare surname, and Australia. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Ireland. Much less frequently, Трэйнор is the forename as well as the last name.