Fenna is a distinctive girls' name in United States, ranking #10341 in 2016 with 10 recorded births. This places Fenna in the bottom 45% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 13 births ranking #8616. In 2016, approximately 1 in every 177,149 girls born was named Fenna. STABLE Recent data shows the name is currently stable.