Could Otto be the perfect name for your baby boy? The baby boy name Otto is 4 letters long, and contains 2 vowel(s) and 2 consonant(s). Otto is a baby boy name that starts with the letter O and ends in the letter O. The baby boy name Otto has a popularity of 69% and is ranked 309 in the list of top 1000 most popular baby boy names. If Otto 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 Otto!