Lambert is a distinctive boys' name in United States, ranking #12438 in 2004 with 5 recorded births. The name reached its all-time peak in 2017 with 18 births ranking #5214. Since 1996, the popularity has decreased by 50.0%. In 2004, approximately 1 in every 396,960 boys born was named Lambert. RISING Recent data shows the name is currently rising.