Fenna is a distinctive girls' name in United States, ranking #9053 in 2025 with 11 recorded births. This places Fenna in the bottom 48% 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 2025, approximately 1 in every 146,115 girls born was named Fenna. STABLE Recent data shows the name is currently stable.