Last name วิลลิส (Willis 
, Wiliss 
, วิลลิส 
) , throughout the world, is a widespread surname. The cognomen วิลลิส is habitual in Jersey, where it is quite a common surname, Jamaica, and Guam (explore the name in all countries). Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Australia. Very seldom, วิลลิส is the forename as well as the last name.