From an Old English place name meaning 'hare meadow' or 'rocky clearing.'
Harley began as an English surname and place-name, usually traced to Old English elements such as hara, “hare,” and leah, “woodland clearing” or “meadow,” giving a meaning along the lines of “hare’s meadow.” Like many English surnames that later became first names, it carries the texture of landscape inside it. For centuries Harley was most visible as a family name, including in notable British lineages, before crossing into regular given-name use.
That transition from place to surname to first name is part of a very English naming story. Its modern image, though, has been shaped as much by popular culture as by etymology. In the twentieth century, Harley took on a rebellious, mechanical sheen through association with Harley-Davidson motorcycles, giving the name an aura of speed, grit, and Americana.
At the same time, it remained soft enough in sound to move across gender lines, especially in English-speaking countries. More recently, the comic-book figure Harley Quinn added another layer, making the name feel playful, chaotic, and unmistakably pop-cultural for many listeners. Because of these overlapping associations, Harley has evolved dramatically in perception: from pastoral English surname to cool modern given name, by turns rugged, stylish, mischievous, and unisex. Few names travel so far from meadow hares to chrome, comic books, and contemporary identity while still sounding entirely natural.