Last name تروي (Troy 
, Troye 
, Troj 
) , in the entire world, is a common cognomen. The family name تروي is characteristic of Northern Europe, particularly Jersey, where it is quite a common surname, Ireland, and Norway, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in the United States, Indonesia, and Ireland. More prevalently, تروي is the forename as well as the last name.