Could Louis be the perfect name for your baby boy? The baby boy name Louis is 5 letters long, and contains 3 vowel(s) and 2 consonant(s). Louis is a baby boy name that starts with the letter L and ends in the letter S. The baby boy name Louis has a popularity of 74% and is ranked 260 in the list of top 1000 most popular baby boy names. If Louis 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 Louis!