Lambert is a distinctive boys' name in United States, ranking #9704 in 2005 with 7 recorded births. The name reached its all-time peak in 2017 with 18 births ranking #5214. Since 1996, the popularity has decreased by 30.0%. In 2005, approximately 1 in every 285,307 boys born was named Lambert. RISING Recent data shows the name is currently rising.