Lennie is a distinctive boys' name in United States, ranking #9378 in 2025 with 8 recorded births. The name reached its all-time peak in 1997 with 12 births ranking #5152. Since 1996, the popularity has increased by 33.3%. In 2025, approximately 1 in every 213,510 boys born was named Lennie. RISING Recent data shows the name is currently rising.
Lennie is a warm vintage short form usually linked with Leonard, so it carries the same broader meaning family tied to lion-like bravery. It feels cheerful and affectionate in modern use.
The name has long existed as a nickname and sometimes stands alone as a first name. Its appeal now is very much part of the revival of soft, informal old-fashioned names.