Harriett is a distinctive girls' name in England & Wales, ranking #951 in 2025 with 37 recorded births. This places Harriett in the top 12% of ranked UK girls' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2017 with 82 births ranking #526. In 2025, approximately 1 in every 6,845 girls born was named Harriett. STABLE Recent data shows the name is currently stable.