Lennin is a very rare variant of Lennon that peaked in 2015 and has grown less common since.
Lennin is predominantly a boy name. In 2025 it ranked #9,379 for boy births in the United States (and #19,363 across all names), given to 8 babies. Lennin was first reported in SSA data in 1981 and peaked in 2016 (14 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 8 | 8 | — | #9,379 |
| 2024 | 11 | 11 | — | #7,548 |
| 2023 | 6 | 6 | — | #11,681 |
| 2022 | 11 | 11 | — | #7,548 |
| 2021 | 5 | 5 | — | #13,297 |
| 2020 | 10 | 10 | — | #7,856 |
| 2019 | 14 | 14 | — | #6,286 |
| 2018 | 13 | 13 | — | #6,559 |
| 2017 | 11 | 11 | — | #7,364 |
| 2016 | 14 | 14 | — | #6,215 |
| 2015 | 16 | 16 | #15,608 | #7,824 |
| 2014 | 7 | 7 | — | #10,291 |
| 2013 | 8 | 8 | — | #9,320 |
| 2012 | 6 | 6 | — | #11,678 |
| 2011 | 7 | 7 | — | #10,322 |
| 2010 | 10 | 10 | — | #7,923 |
| 2009 | 13 | 13 | — | #6,666 |
| 2008 | 8 | 8 | — | #9,521 |
| 2007 | 7 | 7 | — | #10,444 |
| 2006 | 12 | 12 | — | #6,731 |
| 2005 | 12 | 12 | — | #6,463 |
| 2004 | 12 | 12 | — | #6,371 |
| 2003 | 13 | 13 | — | #5,751 |
| 2002 | 10 | 10 | — | #6,839 |
| 2001 | 9 | 9 | — | #7,267 |
| 1999 | 6 | 6 | — | #9,420 |
| 1997 | 6 | — | — | #8,819 |
| 1996 | 6 | — | — | #8,561 |
| 1995 | 6 | — | — | #8,441 |
| 1993 | 7 | — | — | #7,284 |
| 1992 | 7 | — | — | #7,118 |
| 1981 | 6 | — | — | #5,947 |