Could Calum be the perfect name for your baby boy? The baby boy name Calum is 5 letters long, and contains 2 vowel(s) and 3 consonant(s). Calum is a baby boy name that starts with the letter C and ends in the letter M. The baby boy name Calum has a popularity of 8% and is ranked 922 in the list of top 1000 most popular baby boy names. If Calum 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 Calum!