Tatum is strong, distinctive, energetic, and recommended, especially if your last name is as congenial as O'Neal. While we do also hear Tatum for boys, we still like it best as a girls' name.
Though this surname became a first in the nineteenth century, it didn't become a ranked American girls' name until 1994, two decades after Tatum O'Neal won her Best Supporting Oscar at the age of ten. It has consistently remained in the U.S. Top 400 since 2002.
Rose McGowan played a Tatum in the movie Scream. As a surname, Tatum is now strongly associated with popular actor Channing; in the past it was jazz pianist Art.