Theodor is a distinctive boys' name in United States, ranking #3832 in 1998 with 19 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 72.7%. In 1998, approximately 1 in every 100,596 boys born was named Theodor. FALLING Recent data shows the name is currently falling.