Loading your next page…
Loading your next page…
A name. A world of connections.
Recorded in official name statistics for United States, France and 6 more
No sourced pronunciation yet
01 / Meaning & origin
Caius is a masculine given name.
Separate records with matching spellings: Caius (Q65964116)
No etymology is recorded in our sources for this spelling yet. The record exists because the name is documented in use; a meaning will be shown only once a cited source supports it.
02 / Across borders
Explore published naming statistics and documented language connections around the world.
The name atlas
8
countries in our sources
Select a country to follow Caius’s connections around the world.
8 countries with published statistics. Language records show cultural connections; they do not measure how common a name is.
Selected country
Published statistics
United States, 2025: 254 boys (rank 927).
Explore United States4 of 8 countries
03 / By the numbers
Follow the spelling through the years, one published dataset at a time.
1880–2025 Spelling: Caius
Recorded category boys
Hover to explore a year. Use arrow keys when a chart point has focus.
Source: US Social Security Administration; redistributed by nkrishnaswami · SSA national baby names, 1880–2025 (CC0 redistribution)
Integer application counts retained without rounding.
Per million is unavailable: this source has no matching published total.
| Year | Applications | Rank | Status |
|---|---|---|---|
| 1880 | no value | no value | not covered |
| 1881 | no value | no value | not covered |
| 1882 | no value | no value | not covered |
| 1883 | no value | no value | not covered |
| 1884 | no value | no value | not covered |
| 1885 | no value | no value | not covered |
| 1886 | no value | no value | not covered |
| 1887 | no value | no value | not covered |
| 1888 | no value | no value | not covered |
| 1889 | no value | no value | not covered |
| 1890 | no value | no value | not covered |
| 1891 | no value | no value | not covered |
| 1892 | no value | no value | not covered |
| 1893 | no value | no value | not covered |
| 1894 | no value | no value | not covered |
| 1895 | no value | no value | not covered |
| 1896 | no value | no value | not covered |
| 1897 | no value | no value | not covered |
| 1898 | no value | no value | not covered |
| 1899 | no value | no value | not covered |
| 1900 | no value | no value | not covered |
| 1901 | no value | no value | not covered |
| 1902 | no value | no value | not covered |
| 1903 | no value | no value | not covered |
| 1904 | no value | no value | not covered |
| 1905 | no value | no value | not covered |
| 1906 | no value | no value | not covered |
| 1907 | no value | no value | not covered |
| 1908 | no value | no value | not covered |
| 1909 | no value | no value | not covered |
| 1910 | no value | no value | not covered |
| 1911 | no value | no value | not covered |
| 1912 | no value | no value | not covered |
| 1913 | no value | no value | not covered |
| 1914 | no value | no value | not covered |
| 1915 | no value | no value | not covered |
| 1916 | no value | no value | not covered |
| 1917 | no value | no value | not covered |
| 1918 | no value | no value | not covered |
| 1919 | no value | no value | not covered |
| 1920 | no value | no value | not covered |
| 1921 | no value | no value | not covered |
| 1922 | no value | no value | not covered |
| 1923 | no value | no value | not covered |
| 1924 | no value | no value | not covered |
| 1925 | no value | no value | not covered |
| 1926 | no value | no value | not covered |
| 1927 | no value | no value | not covered |
| 1928 | no value | no value | not covered |
| 1929 | no value | no value | not covered |
| 1930 | no value | no value | not covered |
| 1931 | no value | no value | not covered |
| 1932 | no value | no value | not covered |
| 1933 | no value | no value | not covered |
| 1934 | no value | no value | not covered |
| 1935 | no value | no value | not covered |
| 1936 | no value | no value | not covered |
| 1937 | no value | no value | not covered |
| 1938 | no value | no value | not covered |
| 1939 | no value | no value | not covered |
| 1940 | no value | no value | not covered |
| 1941 | no value | no value | not covered |
| 1942 | no value | no value | not covered |
| 1943 | no value | no value | not covered |
| 1944 | no value | no value | not covered |
| 1945 | no value | no value | not covered |
| 1946 | no value | no value | not covered |
| 1947 | no value | no value | not covered |
| 1948 | no value | no value | not covered |
| 1949 | no value | no value | not covered |
| 1950 | no value | no value | not covered |
| 1951 | no value | no value | not covered |
| 1952 | no value | no value | not covered |
| 1953 | no value | no value | not covered |
| 1954 | no value | no value | not covered |
| 1955 | no value | no value | not covered |
| 1956 | no value | no value | not covered |
| 1957 | no value | no value | not covered |
| 1958 | no value | no value | not covered |
| 1959 | no value | no value | not covered |
| 1960 | no value | no value | not covered |
| 1961 | no value | no value | not covered |
| 1962 | no value | no value | not covered |
| 1963 | no value | no value | not covered |
| 1964 | no value | no value | not covered |
| 1965 | no value | no value | not covered |
| 1966 | no value | no value | not covered |
| 1967 | no value | no value | not covered |
| 1968 | no value | no value | not covered |
| 1969 | no value | no value | not covered |
| 1970 | no value | no value | not covered |
| 1971 | no value | no value | not covered |
| 1972 | no value | no value | not covered |
| 1973 | no value | no value | not covered |
| 1974 | no value | no value | not covered |
| 1975 | no value | no value | not covered |
| 1976 | no value | no value | not covered |
| 1977 | no value | no value | not covered |
| 1978 | no value | no value | not covered |
| 1979 | no value | no value | not covered |
| 1980 | no value | no value | not covered |
| 1981 | no value | no value | not covered |
| 1982 | no value | no value | not covered |
| 1983 | no value | no value | not covered |
| 1984 | no value | no value | not covered |
| 1985 | no value | no value | not covered |
| 1986 | no value | no value | not covered |
| 1987 | no value | no value | not covered |
| 1988 | no value | no value | not covered |
| 1989 | no value | no value | not covered |
| 1990 | no value | no value | not covered |
| 1991 | no value | no value | not covered |
| 1992 | no value | no value | not covered |
| 1993 | no value | no value | not covered |
| 1994 | 5 | 8,800 | observed |
| 1995 | no value | no value | not covered |
| 1996 | no value | no value | not covered |
| 1997 | no value | no value | not covered |
| 1998 | no value | no value | not covered |
| 1999 | 7 | 7,874 | observed |
| 2000 | 10 | 6,316 | observed |
| 2001 | 16 | 4,676 | observed |
| 2002 | 13 | 5,395 | observed |
| 2003 | 15 | 5,035 | observed |
| 2004 | 14 | 5,492 | observed |
| 2005 | 23 | 3,941 | observed |
| 2006 | 15 | 5,525 | observed |
| 2007 | 29 | 3,591 | observed |
| 2008 | 27 | 3,823 | observed |
| 2009 | 43 | 2,800 | observed |
| 2010 | 49 | 2,511 | observed |
| 2011 | 44 | 2,699 | observed |
| 2012 | 74 | 1,923 | observed |
| 2013 | 109 | 1,492 | observed |
| 2014 | 124 | 1,375 | observed |
| 2015 | 138 | 1,287 | observed |
| 2016 | 153 | 1,221 | observed |
| 2017 | 110 | 1,510 | observed |
| 2018 | 130 | 1,360 | observed |
| 2019 | 137 | 1,327 | observed |
| 2020 | 156 | 1,209 | observed |
| 2021 | 138 | 1,339 | observed |
| 2022 | 150 | 1,282 | observed |
| 2023 | 140 | 1,346 | observed |
| 2024 | 206 | 1,060 | observed |
| 2025 | 254 | 927 | observed |
Statistics count the spelling “Caius” as recorded by the publisher. When a spelling has several independent origins, the counts are not split between them. Counts measure applications. Gaps are years without a published value, not zeros.
Rates per million are unavailable for this series because no compatible denominator has been imported.
Retrieved 2026-10-15 · CC0-1.0
Read our methodology04 / Through time
Passages quoted verbatim from public-domain reference works. They reflect the scholarship of their time, not current consensus, and may use obsolete spellings.
CAIUS— “rejoiced in”
Caius, or Caiius as the elders spelt it, was one of the most common of all Roman prænomina, and was pronounced Gaius, as it is written in St. Paul’s mention of “Gaius mine host.” Men indicated it by the initial C; women who bore it, used the same C reversed (ↄ) on coins or inscriptions. Valerius, or his imitator, deduces it from _gaudium parentum_, the parents' joy, but it is more probably from the root-word _gai_. When a Roman marriage took place with the full ceremonies…
Caius, or Caiius as the elders spelt it, was one of the most common of all Roman prænomina, and was pronounced Gaius, as it is written in St. Paul’s mention of “Gaius mine host.” Men indicated it by the initial C; women who bore it, used the same C reversed (ↄ) on coins or inscriptions. Valerius, or his imitator, deduces it from _gaudium parentum_, the parents' joy, but it is more probably from the root-word _gai_. When a Roman marriage took place with the full ceremonies such as rendered divorce impossible, the names Caius and Caia always stood for those of the married pair in the formulary of prayer uttered over them while they sat on two chairs with the skin of the sheep newly sacrificed spread over their heads; and when the bride was conducted to her husband’s house, spindle and distaff in hand, she was demanded who she was, and replied, “Where thou art Caius, I am Caia;” and having owned herself his feminine, she was carried over his threshold, to prevent the ill omen of touching it with her foot, and set down on a sheepskin within. From this rite all brides were called Caiæ.…
Yonge, History of Christian Names (1884), Part IV, Chapter II (Latin Prænomina), Section I (Aulus, Caius, Cnæus, Cæso) · Public domain (Project Gutenberg)
People recorded with this given name in Wikidata. Their names may use a different spelling, or include it as a middle or baptismal name.
pope of the Catholic Church from 283 to 296
Dutch footballer (1885-1939)
A little story to keep
Take the story of Caius with you. Create a personal name passport with its meaning, roots and connections.
06 / Behind the facts
Review status: Source-reported — no editorial review recorded yet. Last data change 2026-10-15.
SSA national baby names, 1880–2025 (CC0 redistribution)
US Social Security Administration; redistributed by nkrishnaswami · CC0-1.0 · retrieved 2026-10-15
Ontario first baby names, 1913–2023 (verified redistribution)
Government of Ontario; redistributed by helloharun · OGL-ON-1.0 · retrieved 2026-10-15
Statistik Austria — Vornamen (OGDEXT_VORNAMEN_1): first names of live births, Austria, 1984-2025 (national counts from district rows)
Statistik Austria (Bundesanstalt Statistik Österreich) · CC-BY-4.0 · retrieved 2026-10-15
British Columbia — 100 Years of Popular Baby Names (first names used 5 or more times), 1926-2025
Government of British Columbia, Vital Statistics Agency · OGL-BC (Open Government License - British Columbia; version not stated on the page) · retrieved 2026-10-15
Ontario top baby names, historical archive 1917–2013
Government of Ontario (Office of the Registrar General) · OGL-ON-1.0 · retrieved 2026-10-15
South Australia — Popular Baby Names, per-year lists including names given once, 1944-2017
Attorney-General's Department, South Australia (via data.sa.gov.au) · CC-BY-4.0 · retrieved 2026-10-15
National Records of Scotland — Babies' First Names: all first forenames given to 3 or more babies, Scotland, 1974-2025
National Records of Scotland (NRS) · OGL-UK-3.0 · retrieved 2026-10-15
Finland — first given names of living Finnish citizens in Finland or abroad, 2026-08-03
Digital and Population Data Services Agency (DVV), Finland · CC-BY-4.0 · retrieved 2026-10-15
Baby names in England and Wales: 2025 (boys and girls workbooks, Table 6: all published names)
Office for National Statistics (ONS) · OGL-UK-3.0 · retrieved 2026-10-14
Fichier des prénoms — édition 2026 (naissances 1900 à 2025), fichier national
Insee (Institut national de la statistique et des études économiques) · LO-2.0 · retrieved 2026-10-14
NISRA — First Forenames Given to Babies Registered in Northern Ireland, 1997-2025 (full list)
Northern Ireland Statistics and Research Agency (NISRA) · OGL-UK-3.0 · retrieved 2026-10-15
Berlin — published first-given-name registration counts, 2017–2023
BerlinOnline GmbH, based on Berlin LABO civil-registry data · CC-BY-3.0-DE · retrieved 2026-10-15
Wiktionary text: CC BY-SA 4.0. Wikidata: CC0. Commons recordings retain their individual file licences. Complete attribution is available in each group above and alongside each chart.
