Theodor is a distinctive boys' name in United States, ranking #2408 in 2015 with 54 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 390.9%. In 2015, approximately 1 in every 35,486 boys born was named Theodor. FALLING Recent data shows the name is currently falling.