Theseus is a distinctive boys' name in United States, ranking #3487 in 2021 with 33 recorded births. This places Theseus in the top 25% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2015 with 44 births ranking #2758. In 2021, approximately 1 in every 52,977 boys born was named Theseus. FALLING Recent data shows the name is currently falling.