Could Justus be the perfect name for your baby boy? The baby boy name Justus is 6 letters long, and contains 2 vowel(s) and 4 consonant(s). Justus is a baby boy name that starts with the letter J and ends in the letter S. The baby boy name Justus has a popularity of 3% and is ranked 972 in the list of top 1000 most popular baby boy names. If Justus 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 Justus!