Willy (surname)

The surname Willy is a patronymic surname, derived from a personal name. It is typically considered to be of English and German origin, ultimately stemming from the given name William or Wilhelm, respectively. William is of Germanic origin, composed of the elements "wil" (desire, will) and "helm" (helmet, protection). Wilhelm is the German equivalent, with the same etymological roots.

As a patronymic surname, Willy signifies "son of Willy/William/Wilhelm." Over time, variations in spelling and pronunciation led to the establishment of Willy as a distinct surname in its own right.

The name is found in various English-speaking countries as well as in Germany and other parts of Europe. The prevalence of the surname varies by region. Early records of the name appear in census data and parish registers.