The name Niamh is a popular name and parents adore it due to its significance on the character. Niamh name meaning is The Daughter Of A Sea God In Irish Mythology and it associate lucky number is 9. Niamh is a versatile name that has been popular in the English-speaking world for many decades and Niamh name meaning is also deep. Find out the pronunciation of Niamh and other well-known baby names that sound similar to Niamh in the United States of America (USA).