Harriett is a distinctive girls' name in England & Wales, ranking #526 in 2017 with 82 recorded births. The name reached its all-time peak in 2017 with 82 births ranking #526. Since 1996, the popularity has increased by 134.3%. In 2017, approximately 1 in every 3,647 girls born was named Harriett. STABLE Recent data shows the name is currently stable.