Could Dax be the perfect name for your baby boy? The baby boy name Dax is 3 letters long, and contains 1 vowel(s) and 2 consonant(s). Dax is a baby boy name that starts with the letter D and ends in the letter X. The baby boy name Dax has a popularity of 56% and is ranked 444 in the list of top 1000 most popular baby boy names. If Dax 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 Dax!