Could Osiris be the perfect name for your baby boy? The baby boy name Osiris is 6 letters long, and contains 3 vowel(s) and 3 consonant(s). Osiris is a baby boy name that starts with the letter O and ends in the letter S. The baby boy name Osiris has a popularity of 9% and is ranked 910 in the list of top 1000 most popular baby boy names. If Osiris 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 Osiris!