Theodor is a distinctive boys' name in United States, ranking #3982 in 2010 with 26 recorded births. The name reached its all-time peak in 2022 with 88 births ranking #1836. Since 1996, the popularity has increased by 136.4%. In 2010, approximately 1 in every 73,785 boys born was named Theodor. FALLING Recent data shows the name is currently falling.