Could Kaisen be the perfect name for your baby boy? The baby boy name Kaisen is 6 letters long, and contains 3 vowel(s) and 3 consonant(s). Kaisen is a baby boy name that starts with the letter K and ends in the letter N. The baby boy name Kaisen has a popularity of 9% and is ranked 909 in the list of top 1000 most popular baby boy names. If Kaisen 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 Kaisen!