Kien is a rare variant of Kian that peaked in 2024 and remains in steady use.
Kien is a boy name. In 2025 it ranked #6,653 for boy births in the United States (and #13,951 across all names), given to 13 babies. Kien was first reported in SSA data in 1982 and peaked in 2024 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 13 | 13 | #6,653 |
| 2024 | 26 | 26 | #4,146 |
| 2023 | 13 | 13 | #6,732 |
| 2022 | 15 | 15 | #6,019 |
| 2021 | 22 | 22 | #4,563 |
| 2020 | 14 | 14 | #6,155 |
| 2019 | 20 | 20 | #4,897 |
| 2018 | 15 | 15 | #5,928 |
| 2017 | 16 | 16 | #5,676 |
| 2016 | 21 | 21 | #4,704 |
| 2015 | 18 | 18 | #5,185 |
| 2014 | 17 | 17 | #5,383 |
| 2013 | 21 | 21 | #4,548 |
| 2012 | 15 | 15 | #5,868 |
| 2011 | 16 | 16 | #5,568 |
| 2010 | 20 | 20 | #4,771 |
| 2009 | 22 | 22 | #4,516 |
| 2008 | 19 | 19 | #4,984 |
| 2007 | 13 | 13 | #6,466 |
| 2006 | 10 | 10 | #7,755 |
| 2005 | 14 | 14 | #5,751 |
| 2004 | 25 | 25 | #3,704 |
| 2003 | 18 | 18 | #4,531 |
| 2002 | 14 | 14 | #5,277 |
| 2001 | 12 | 12 | #5,874 |
| 2000 | 7 | 7 | #8,713 |
| 1999 | 9 | 9 | #6,847 |
| 1998 | 7 | 7 | #8,066 |
| 1997 | 7 | — | #7,736 |
| 1996 | 10 | — | #5,789 |
| 1994 | 8 | — | #6,713 |
| 1993 | 8 | — | #6,570 |
| 1992 | 6 | — | #7,988 |
| 1991 | 8 | — | #6,256 |
| 1989 | 6 | — | #7,475 |
| 1985 | 7 | — | #5,475 |
| 1984 | 6 | — | #5,998 |
| 1983 | 6 | — | #5,890 |
| 1982 | 6 | — | #6,039 |