Surname Гиллис (Gillis 
, Gillies 
, Гиллис 
) , in all the world, is a common family name. The cognomen Гиллис is characteristic of British Virgin Islands, where it is quite a common surname, Belgium, and Canada (explore the name in all countries). Measured by absolute frequency, this name is the most popular in the United States, Canada, and the United Kingdom. Much less frequently, Гиллис is the forename as well as the last name.