Lambert is a distinctive boys' name in United States, ranking #7886 in 2000 with 8 recorded births. The name reached its all-time peak in 2017 with 18 births ranking #5214. Since 1996, the popularity has decreased by 20.0%. In 2000, approximately 1 in every 245,492 boys born was named Lambert. RISING Recent data shows the name is currently rising.