Could Seth be the perfect name for your baby boy? The baby boy name Seth is 4 letters long, and contains 1 vowel(s) and 3 consonant(s). Seth is a baby boy name that starts with the letter S and ends in the letter H. The baby boy name Seth has a popularity of 57% and is ranked 434 in the list of top 1000 most popular baby boy names. If Seth 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 Seth!