Theodor is a distinctive boys' name in United States, ranking #4728 in 2009 with 21 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 90.9%. In 2009, approximately 1 in every 94,443 boys born was named Theodor. FALLING Recent data shows the name is currently falling.