The name Midnight is a boy's name . Midnight and is often added to lists like Unique Baby Names and discussed in our forums with posts like "Adding Then Eliminating -- Girls Themed".
From the experts:
Nicole Richie and Joel Madden added this rocking name to the lexicon of day names, which have their roots in the African tradition of naming a child after the day of the week, time of day, or season in which he or she was born. But they wisely used it as a middle name.