Thienan is a very rare name used for both girls and boys that peaked in 2006 and has since faded.
Thienan is predominantly a boy name. In 2025 it ranked #13,693 for boy births in the United States (and #28,189 across all names), given to 5 babies. Thienan first appears in 2000 and peaked in 2009 (8 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 5 | 5 | — | #13,693 |
| 2022 | 6 | 6 | — | #12,167 |
| 2017 | 5 | 5 | — | #14,058 |
| 2014 | 8 | 8 | #12,977 | — |
| 2013 | 7 | 7 | — | #10,616 |
| 2012 | 6 | 6 | — | #12,136 |
| 2010 | 6 | 6 | — | #12,066 |
| 2009 | 8 | 8 | — | #9,768 |
| 2008 | 13 | 13 | #13,721 | #14,394 |
| 2006 | 15 | 15 | #13,512 | #10,545 |
| 2003 | 6 | 6 | — | #10,749 |
| 2002 | 5 | 5 | #17,893 | — |
| 2000 | 5 | 5 | — | #11,971 |