Could Millie be the perfect name for your baby girl? The baby girl name Millie is 6 letters long, and contains 3 vowel(s) and 3 consonant(s). Millie is a baby girl name that starts with the letter M and ends in the letter E. The baby girl name Millie has a popularity of 81% and is ranked 190 in the list of top 1000 most popular baby girl names. If Millie isn't the ideal name for your baby girl then take a look here for some randomly generated names. Hopefully you'll find a more suitable first name for your baby girl than Millie!