Could Serenity be the perfect name for your baby girl? The baby girl name Serenity is 8 letters long, and contains 3 vowel(s) and 5 consonant(s). Serenity is a baby girl name that starts with the letter S and ends in the letter Y. The baby girl name Serenity has a popularity of 92% and is ranked 79 in the list of top 1000 most popular baby girl names. If Serenity isn't the ideal name for your baby girl then take a look here for some randomly generated names. Hopefully you'll find a more suitable first name for your baby girl than Serenity!