Theodor is a distinctive boys' name in United States, ranking #2004 in 2025 with 76 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 590.9%. In 2025, approximately 1 in every 22,475 boys born was named Theodor. FALLING Recent data shows the name is currently falling.