Jay is a short and simple masculine name of English origin. It began as a nickname or short form for various names beginning with the sound J, most notably James and Jason. Over time, Jay has become established as a standalone given name. Etymology and Early Use The use of Jay as a surname is linked to the jaybird, but as a given name its rise owes much to the Founding Father John Jay (1745–1829), first Chief Justice of the United States. His surname was derived from the bird name. In the late 20th century, Jay became especially popular as a first name without closer ties to other J-starting names. Popularity and Cultural Context Jay as a first name peaked in the United States in the 1960s and 1970s. It ranked among the top 100 boys' names until the 1990s. Its brevity and versatility made it a modern classic. Related Forms and Variants Jay has spawned a number of variations and longer forms, including Jace, Jai, Jase, and Jayce. Diminutives include Jimi, Jimmie, and Jimmy, while Jaye is used as a feminine form. The name is also familiar across language families from Iason (Greek mythology) to Yacoub (Arabic). Notable Bearers Famous individuals named Jay include Jay Leno (born 1950), American late-night talk show host, and Jay-Z (born 1969), rapper and music mogul. The name has also been stylized in music by Jimi Hendrix (born James Marshall Hendrix) as the variant "Jimi." Meaning: Short form of names beginning with J (like James or Jason), also from the jaybird surname. Origin: English, from the surname Jay or as a diminutive. Type: Given name, often a short form or standalone. Usage: Predominantly English-speaking countries (US, UK, Canada, Australia).