Could Sean be the perfect name for your baby boy? The baby boy name Sean is 4 letters long, and contains 2 vowel(s) and 2 consonant(s). Sean is a baby boy name that starts with the letter S and ends in the letter N. The baby boy name Sean has a popularity of 66% and is ranked 336 in the list of top 1000 most popular baby boy names. If Sean isn't the ideal name for your baby boy then take a look here for some randomly generated names. Hopefully you'll find a more suitable first name for your baby boy than Sean!