Could Kelvin be the perfect name for your baby boy? The baby boy name Kelvin is 6 letters long, and contains 2 vowel(s) and 4 consonant(s). Kelvin is a baby boy name that starts with the letter K and ends in the letter N. The baby boy name Kelvin has a popularity of 9% and is ranked 910 in the list of top 1000 most popular baby boy names. If Kelvin 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 Kelvin!