Theodor is a distinctive boys' name in United States, ranking #4515 in 1999 with 16 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 45.5%. In 1999, approximately 1 in every 120,005 boys born was named Theodor. FALLING Recent data shows the name is currently falling.