Guillermo
Boy · gee-YAIR-moh · Germanic
Guillermo is a boys' name of Germanic origin, meaning “will + helmet”. In 2025 it ranked 901st for boys in the US (264 babies).
What does Guillermo mean?
Germanic: Spanish form of William
“will + helmet”
The Spanish form of William, from Germanic wil 'desire' and helm 'helmet, protection'.
- Say it
- gee-YAIR-moh
Is Guillermo a girl's or a boy's name?
Guillermo is a boys' name. In 2025, it was given to 264 boys in the US. Too few girls were given it to be listed.
How popular is Guillermo in the UK?
No boys in the UK were given it in 2025, or too few to be listed. Its busiest year was 2019, with 8 boys.
Half of all the boys named Guillermo in the UK since 1996 were born between 2013 and 2020, the years shaded on the chart below.
Guillermo in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2023 | 3 | #5,193 |
| 2022 | 7 | #2,922 |
| 2021 | 3 | #4,989 |
| 2020 | 3 | #4,803 |
| 2019 | 8 | #2,633 |
| 2018 | 4 | #4,169 |
| 2017 | 1 | #6,312 |
| 2016 | 6 | #3,241 |
| 2015 | 4 | #4,086 |
| 2014 | 4 | #4,063 |
| 2013 | 3 | #4,884 |
| 2012 | 0 | – |
| 2011 | 3 | #4,837 |
| 2010 | 3 | #4,865 |
| 2009 | 3 | #4,691 |
| 2008 | 3 | #4,615 |
| 2007 | 0 | – |
| 2006 | 0 | – |
| 2005 | 0 | – |
| 2004 | 0 | – |
| 2003 | 0 | – |
| 2002 | 0 | – |
| 2001 | 0 | – |
| 2000 | 0 | – |
| 1999 | 0 | – |
| 1998 | 0 | – |
| 1997 | 1 | #3,857 |
| 1996 | 1 | #3,776 |
How popular is Guillermo in the US?
- Rank in 2025
- #901among boys
- Babies in 2025
- 264about 1 in 6,500 boys
- Five-year trend
- Steadydown 6% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 264 boys in the US were named Guillermo, making it the 901st most popular name for boys. Five years earlier, in 2020, it was 832nd. Its busiest year was 1998, with 693 boys. It first appears in the records in 1885.
2025 had fewer boys named Guillermo than any year since 1969.
Half of all the boys named Guillermo in the US since 1880 were born between 1974 and 2005, the years shaded on the chart below.
Guillermo in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 264 | #901 |
| 2024 | 299 | #831 |
| 2023 | 294 | #833 |
| 2022 | 287 | #848 |
| 2021 | 299 | #811 |
| 2020 | 275 | #832 |
| 2019 | 320 | #747 |
| 2018 | 314 | #751 |
| 2017 | 289 | #795 |
| 2016 | 322 | #754 |
| 2015 | 389 | #661 |
| 2014 | 376 | #676 |
| 2013 | 348 | #688 |
| 2012 | 392 | #619 |
| 2011 | 408 | #604 |
| 2010 | 457 | #553 |
| 2009 | 534 | #507 |
| 2008 | 583 | #476 |
| 2007 | 610 | #454 |
| 2006 | 621 | #439 |
| 2005 | 616 | #434 |
| 2004 | 639 | #406 |
| 2003 | 595 | #428 |
| 2002 | 626 | #404 |
| 2001 | 620 | #402 |
| 2000 | 651 | #391 |
| 1999 | 665 | #387 |
| 1998 | 693 | #369 |
| 1997 | 632 | #382 |
| 1996 | 692 | #352 |
| 1995 | 623 | #380 |
| 1994 | 675 | #357 |
| 1993 | 654 | #360 |
| 1992 | 659 | #360 |
| 1991 | 582 | #389 |
| 1990 | 587 | #394 |
| 1989 | 532 | #404 |
| 1988 | 511 | #385 |
| 1987 | 388 | #451 |
| 1986 | 405 | #429 |
| 1985 | 432 | #409 |
| 1984 | 412 | #404 |
| 1983 | 423 | #394 |
| 1982 | 437 | #386 |
| 1981 | 428 | #392 |
| 1980 | 395 | #409 |
| 1979 | 394 | #400 |
| 1978 | 322 | #441 |
| 1977 | 351 | #422 |
| 1976 | 360 | #410 |
| 1975 | 349 | #416 |
| 1974 | 349 | #418 |
| 1973 | 347 | #419 |
| 1972 | 281 | #469 |
| 1971 | 314 | #460 |
| 1970 | 290 | #472 |
| 1969 | 244 | #494 |
| 1968 | 292 | #449 |
| 1967 | 242 | #483 |
| 1966 | 194 | #550 |
| 1965 | 203 | #539 |
| 1964 | 192 | #571 |
| 1963 | 193 | #567 |
| 1962 | 185 | #576 |
| 1961 | 171 | #606 |
| 1960 | 191 | #564 |
| 1959 | 184 | #579 |
| 1958 | 162 | #602 |
| 1957 | 158 | #610 |
| 1956 | 172 | #579 |
| 1955 | 150 | #603 |
| 1954 | 149 | #604 |
| 1953 | 126 | #635 |
| 1952 | 134 | #607 |
| 1951 | 133 | #609 |
| 1950 | 127 | #605 |
| 1949 | 137 | #576 |
| 1948 | 136 | #571 |
| 1947 | 114 | #645 |
| 1946 | 93 | #671 |
| 1945 | 94 | #624 |
| 1944 | 77 | #707 |
| 1943 | 79 | #724 |
| 1942 | 53 | #910 |
| 1941 | 89 | #646 |
| 1940 | 71 | #726 |
| 1939 | 63 | #763 |
| 1938 | 70 | #730 |
| 1937 | 67 | #742 |
| 1936 | 79 | #660 |
| 1935 | 72 | #716 |
| 1934 | 86 | #650 |
| 1933 | 74 | #694 |
| 1932 | 71 | #739 |
| 1931 | 100 | #584 |
| 1930 | 101 | #610 |
| 1929 | 94 | #630 |
| 1928 | 87 | #676 |
| 1927 | 100 | #629 |
| 1926 | 107 | #605 |
| 1925 | 88 | #682 |
| 1924 | 87 | #704 |
| 1923 | 89 | #682 |
| 1922 | 57 | #924 |
| 1921 | 44 | #1,058 |
| 1920 | 68 | #812 |
| 1919 | 43 | #1,034 |
| 1918 | 34 | #1,192 |
| 1917 | 40 | #1,033 |
| 1916 | 20 | #1,593 |
| 1915 | 33 | #1,124 |
| 1914 | 26 | #1,127 |
| 1913 | 16 | #1,310 |
| 1912 | 18 | #1,095 |
| 1911 | 10 | #1,116 |
| 1910 | 13 | #859 |
| 1909 | 5 | #1,439 |
| 1908 | 7 | #1,112 |
| 1907 | 6 | #1,199 |
| 1906 | 0 | – |
| 1905 | 10 | #786 |
| 1904 | 10 | #760 |
| 1903 | 0 | – |
| 1902 | 0 | – |
| 1901 | 0 | – |
| 1900 | 6 | #1,161 |
| 1899 | 0 | – |
| 1898 | 0 | – |
| 1897 | 5 | #1,056 |
| 1896 | 0 | – |
| 1895 | 0 | – |
| 1894 | 0 | – |
| 1893 | 0 | – |
| 1892 | 8 | #791 |
| 1891 | 0 | – |
| 1890 | 0 | – |
| 1889 | 0 | – |
| 1888 | 0 | – |
| 1887 | 0 | – |
| 1886 | 0 | – |
| 1885 | 5 | #935 |
Nicknames for Guillermo
- Memo
Names like Guillermo
Names given in the same years and the same naming tradition, with a similar sound.
Leonardo Gabriel Hugo Lorenzo Zachary Reggie Myles Bobby Robin Milo Tobias Rudy
Names related to Guillermo
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