Surname 吉莉安 (Gillian 
, Jillian , 吉莉安 
) , all around the world, is quite a common family name. The last name 吉莉安 is characteristic of Cameroon, where it is quite a rare surname, Israel, and Honduras. Measured by absolute frequency, the name is most common in Cameroon, the United States, and Spain. Much more prevalently, 吉莉安 is the forename as well as the last name.