Two letter names for boys are a short (ahem) elite list. Two letter boy names may be nickname names or in a few cases names in their own right. The most popular two letter boy names include Ed, Ty, Bo, Al, and Cy. If you're looking for a two letter name for your baby boy, here is our complete list. The top names below rank among the current US Top 1000 Baby Names and are ordered by popularity. Unique names rank below the Top 1000 and are listed alphabetically.