Modern respelling of Jacqueline, feminine of Jacques, from Hebrew Jacob meaning 'supplanter'.
Jaclyn is a modernized spelling of Jacqueline, the French feminine form of Jacques — itself the French rendering of the Latin Jacobus and ultimately the Hebrew Ya'akov (Jacob), meaning 'supplanter' or, in some interpretations, 'one who follows at the heel.' The name's journey from an ancient biblical figure to a chic mid-century feminine form is a study in how names migrate across languages and centuries, shedding and acquiring connotations as they travel. Jacqueline entered the English-speaking world through Norman French influence, but it was Jacqueline Bouvier Kennedy Onassis who electrified the name in the 20th century.
Her poise, intellect, and cultural influence during the Kennedy White House years made 'Jackie' a byword for sophisticated femininity. Jaclyn Smith, the actress who embodied Kelly Garrett on the original Charlie's Angels (1976–1981), cemented this particular spelling in popular consciousness — stylish, contemporary, with a hint of Hollywood glamour. The Jaclyn spelling emerged in the latter half of the 20th century as parents sought to differentiate their daughters' names on paper while retaining the familiar sound.
It peaked in popularity through the 1980s and 1990s, shaped largely by Smith's enduring visibility. Today the name occupies a nostalgic register — recognizable and warm, associated with a generation's idea of effortless cool.