Willem is an uncommon variant of William that peaked in 2003 and has grown less common since.
Willem is a boy name. In 2025 it ranked #2,601 for boy births in the United States (and #5,593 across all names), given to 51 babies. Willem first appears in 1916 and peaked in 2003 (122 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 51 | 51 | #2,601 |
| 2024 | 50 | 50 | #2,671 |
| 2023 | 51 | 51 | #2,608 |
| 2022 | 54 | 54 | #2,561 |
| 2021 | 75 | 75 | #1,997 |
| 2020 | 60 | 60 | #2,289 |
| 2019 | 76 | 76 | #1,951 |
| 2018 | 62 | 62 | #2,229 |
| 2017 | 56 | 56 | #2,343 |
| 2016 | 70 | 70 | #2,045 |
| 2015 | 67 | 67 | #2,108 |
| 2014 | 87 | 87 | #1,750 |
| 2013 | 86 | 86 | #1,724 |
| 2012 | 82 | 82 | #1,814 |
| 2011 | 74 | 74 | #1,902 |
| 2010 | 83 | 83 | #1,792 |
| 2009 | 71 | 71 | #1,989 |
| 2008 | 98 | 98 | #1,612 |
| 2007 | 105 | 105 | #1,515 |
| 2006 | 103 | 103 | #1,490 |
| 2005 | 107 | 107 | #1,401 |
| 2004 | 112 | 112 | #1,326 |
| 2003 | 122 | 122 | #1,208 |
| 2002 | 109 | 109 | #1,255 |
| 2001 | 79 | 79 | #1,542 |
| 2000 | 96 | 96 | #1,340 |
| 1999 | 75 | 75 | #1,516 |
| 1998 | 68 | 68 | #1,573 |
| 1997 | 53 | — | #1,812 |
| 1996 | 46 | — | #1,956 |
| 1995 | 35 | — | #2,294 |
| 1994 | 44 | — | #1,926 |
| 1993 | 40 | — | #2,049 |
| 1992 | 30 | — | #2,465 |
| 1991 | 25 | — | #2,750 |
| 1990 | 27 | — | #2,552 |
| 1989 | 32 | — | #2,205 |
| 1988 | 11 | — | #4,437 |
| 1987 | 7 | — | #6,075 |
| 1986 | 7 | — | #5,912 |
| 1985 | 8 | — | #5,133 |
| 1984 | 10 | — | #4,207 |
| 1983 | 7 | — | #5,466 |
| 1982 | 12 | — | #3,684 |
| 1981 | 10 | — | #4,142 |
| 1980 | 8 | — | #4,927 |
| 1979 | 10 | — | #4,060 |
| 1978 | 5 | — | #6,743 |
| 1977 | 7 | — | #5,112 |
| 1976 | 6 | — | #5,572 |
| 1975 | 12 | — | #3,240 |
| 1974 | 5 | — | #5,991 |
| 1971 | 11 | — | #3,140 |
| 1970 | 6 | — | #4,717 |
| 1969 | 9 | — | #3,307 |
| 1968 | 6 | — | #4,124 |
| 1967 | 10 | — | #2,757 |
| 1966 | 6 | — | #3,937 |
| 1965 | 5 | — | #4,421 |
| 1964 | 6 | — | #4,034 |
| 1963 | 10 | — | #2,853 |
| 1962 | 5 | — | #4,619 |
| 1961 | 6 | — | #4,053 |
| 1960 | 8 | — | #3,331 |
| 1958 | 9 | — | #3,025 |
| 1957 | 8 | — | #3,253 |
| 1956 | 8 | — | #3,209 |
| 1952 | 5 | — | #4,250 |
| 1941 | 5 | — | #3,990 |
| 1932 | 5 | — | #4,270 |
| 1927 | 8 | — | #3,441 |
| 1922 | 5 | — | #4,949 |
| 1921 | 5 | — | #4,961 |
| 1916 | 8 | — | #3,169 |