Tau is a distinctive boys' name in United States, ranking #13675 in 2025 with 5 recorded births. This places Tau in the bottom 2% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 6 births ranking #11969. In 2025, approximately 1 in every 341,615 boys born was named Tau. STABLE Recent data shows the name is currently stable.