The name Jay is a popular name and parents adore it due to its significance on the character. Jay name meaning is Blue Jay; He who Supplants; The Lord is Salvation; Victory; Blue Crested Bird; A Bird in the Crow Family; Win and it associate lucky number is 9. Jay is a versatile name that has been popular in the English-speaking world for many decades and Jay name meaning is also deep. Find out the pronunciation of Jay and other well-known baby names that sound similar to Jay in the United States of America (USA).