Lyndon is a distinctive boys' name in United States, ranking #1235 in 1998 with 99 recorded births. The name reached its all-time peak in 2015 with 155 births ranking #1195. Since 1996, the popularity has increased by 16.5%. In 1998, approximately 1 in every 19,306 boys born was named Lyndon. FALLING Recent data shows the name is currently falling.