Cassius
- Gender
- Boy
- Say it
- KAS-ee-us
- Origin
- Latin
- UK rank, 2025
- #343 for boys
- US rank, 2025
- #582 for boys
Cassius is a boys' name of Latin origin. In 2025 it ranked 343rd for boys in the UK (140 babies) and 582nd for boys in the US (504 babies).
What does Cassius mean?
Latin: Roman family name, perhaps from Latin cassus, empty
Gaius Cassius Longinus was a leading conspirator in the assassination of Julius Caesar in 44 BC.
More on Wiktionary.
Is Cassius a girl's or a boy's name?
Cassius is a boys' name. In 2025, it was given to 140 boys in the UK and 504 boys in the US. Too few girls were given it to be listed.
How popular is Cassius in the UK?
- Rank in 2025
- 343rd among boys
- Babies in 2025
- 140 about 1 in 2,100 boys
- Five-year trend
- Steady up 4% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 140 boys in the UK were named Cassius, making it the 343rd most popular name for boys. Five years earlier, in 2020, it was 336th. Its busiest year was 2023, with 178 boys.
2025 had fewer boys named Cassius than any year since 2017.
Half of all the boys named Cassius in the UK since 1996 were born between 2012 and 2022, the years shaded on the chart below.
Among boys in 2025, it was 319th in England and Wales.
Cassius in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 140 | #343 |
| 2024 | 163 | #305 |
| 2023 | 178 | #287 |
| 2022 | 173 | #297 |
| 2021 | 171 | #309 |
| 2020 | 150 | #336 |
| 2019 | 169 | #318 |
| 2018 | 143 | #354 |
| 2017 | 113 | #425 |
| 2016 | 127 | #398 |
| 2015 | 86 | #506 |
| 2014 | 108 | #425 |
| 2013 | 113 | #413 |
| 2012 | 100 | #443 |
| 2011 | 83 | #493 |
| 2010 | 75 | #521 |
| 2009 | 72 | #534 |
| 2008 | 57 | #621 |
| 2007 | 43 | #731 |
| 2006 | 50 | #631 |
| 2005 | 42 | #689 |
| 2004 | 33 | #763 |
| 2003 | 21 | #975 |
| 2002 | 26 | #791 |
| 2001 | 23 | #818 |
| 2000 | 13 | #1,165 |
| 1999 | 20 | #870 |
| 1998 | 10 | #1,346 |
| 1997 | 8 | #1,532 |
| 1996 | 9 | #1,394 |
How popular is Cassius in the US?
- Rank in 2025
- 582nd among boys
- Babies in 2025
- 504 about 1 in 3,400 boys
- Five-year trend
- Steady down 5% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 504 boys in the US were named Cassius, making it the 582nd most popular name for boys. Five years earlier, in 2020, it was 488th. Its busiest year was 2021, with 607 boys.
2025 had fewer boys named Cassius than any year since 2018.
Half of all the boys named Cassius in the US since 1880 were born between 2008 and 2021, the years shaded on the chart below.
In 2025, 510 boys in the US were given Cassius or a name that sounds the same. With every name's spellings counted this way, that ranks #558, up from #582 for this spelling alone.
- Cassius 504
- Kasius 6
Cassius in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 504 | #582 |
| 2024 | 516 | #569 |
| 2023 | 509 | #575 |
| 2022 | 541 | #548 |
| 2021 | 607 | #487 |
| 2020 | 602 | #488 |
| 2019 | 554 | #514 |
| 2018 | 460 | #594 |
| 2017 | 467 | #582 |
| 2016 | 449 | #600 |
| 2015 | 406 | #644 |
| 2014 | 346 | #704 |
| 2013 | 300 | #757 |
| 2012 | 218 | #933 |
| 2011 | 240 | #873 |
| 2010 | 195 | #1,005 |
| 2009 | 199 | #991 |
| 2008 | 213 | #946 |
| 2007 | 164 | #1,115 |
| 2006 | 169 | #1,058 |
| 2005 | 102 | #1,441 |
| 2004 | 95 | #1,454 |
| 2003 | 79 | #1,588 |
| 2002 | 85 | #1,480 |
| 2001 | 59 | #1,867 |
| 2000 | 60 | #1,795 |
| 1999 | 47 | #2,020 |
| 1998 | 52 | #1,868 |
| 1997 | 45 | #1,988 |
| 1996 | 42 | #2,042 |
| 1995 | 34 | #2,294 |
| 1994 | 26 | #2,761 |
| 1993 | 42 | #1,928 |
| 1992 | 44 | #1,839 |
| 1991 | 45 | #1,762 |
| 1990 | 42 | #1,835 |
| 1989 | 25 | #2,539 |
| 1988 | 27 | #2,250 |
| 1987 | 23 | #2,396 |
| 1986 | 27 | #2,094 |
| 1985 | 16 | #2,939 |
| 1984 | 24 | #2,158 |
| 1983 | 19 | #2,492 |
| 1982 | 17 | #2,708 |
| 1981 | 22 | #2,269 |
| 1980 | 11 | #3,614 |
| 1979 | 16 | #2,776 |
| 1978 | 18 | #2,472 |
| 1977 | 13 | #3,036 |
| 1976 | 20 | #2,244 |
| 1975 | 11 | #3,244 |
| 1974 | 17 | #2,356 |
| 1973 | 12 | #2,855 |
| 1972 | 19 | #2,080 |
| 1971 | 36 | #1,415 |
| 1970 | 27 | #1,657 |
| 1969 | 22 | #1,766 |
| 1968 | 19 | #1,835 |
| 1967 | 43 | #1,132 |
| 1966 | 38 | #1,215 |
| 1965 | 42 | #1,163 |
| 1964 | 78 | #860 |
| 1963 | 27 | #1,512 |
| 1962 | 15 | #2,116 |
| 1961 | 17 | #1,996 |
| 1960 | 8 | #3,075 |
| 1959 | 9 | #2,820 |
| 1958 | 0 | – |
| 1957 | 0 | – |
| 1956 | 6 | #3,533 |
| 1955 | 8 | #2,962 |
| 1954 | 0 | – |
| 1953 | 0 | – |
| 1952 | 0 | – |
| 1951 | 5 | #3,712 |
| 1950 | 6 | #3,328 |
| 1949 | 0 | – |
| 1948 | 13 | #2,114 |
| 1947 | 0 | – |
| 1946 | 5 | #3,523 |
| 1945 | 0 | – |
| 1944 | 9 | #2,466 |
| 1943 | 10 | #2,404 |
| 1942 | 7 | #2,939 |
| 1941 | 7 | #2,871 |
| 1940 | 8 | #2,671 |
| 1939 | 6 | #3,112 |
| 1938 | 5 | #3,533 |
| 1937 | 0 | – |
| 1936 | 0 | – |
| 1935 | 6 | #3,252 |
| 1934 | 0 | – |
| 1933 | 0 | – |
| 1932 | 5 | #3,774 |
| 1931 | 13 | #2,101 |
| 1930 | 12 | #2,292 |
| 1929 | 10 | #2,588 |
| 1928 | 10 | #2,659 |
| 1927 | 8 | #3,150 |
| 1926 | 13 | #2,302 |
| 1925 | 10 | #2,753 |
| 1924 | 9 | #3,022 |
| 1923 | 16 | #2,019 |
| 1922 | 10 | #2,800 |
| 1921 | 10 | #2,803 |
| 1920 | 16 | #2,051 |
| 1919 | 8 | #3,114 |
| 1918 | 16 | #1,997 |
| 1917 | 17 | #1,814 |
| 1916 | 19 | #1,645 |
| 1915 | 10 | #2,457 |
| 1914 | 9 | #2,270 |
| 1913 | 11 | #1,675 |
| 1912 | 0 | – |
| 1911 | 0 | – |
| 1910 | 5 | #1,588 |
| 1909 | 0 | – |
| 1908 | 5 | #1,372 |
| 1907 | 0 | – |
| 1906 | 0 | – |
| 1905 | 0 | – |
| 1904 | 0 | – |
| 1903 | 0 | – |
| 1902 | 0 | – |
| 1901 | 0 | – |
| 1900 | 0 | – |
| 1899 | 0 | – |
| 1898 | 0 | – |
| 1897 | 0 | – |
| 1896 | 0 | – |
| 1895 | 6 | #977 |
| 1894 | 0 | – |
| 1893 | 8 | #768 |
| 1892 | 8 | #791 |
| 1891 | 6 | #840 |
| 1890 | 7 | #814 |
| 1889 | 6 | #878 |
| 1888 | 10 | #648 |
| 1887 | 5 | #921 |
| 1886 | 0 | – |
| 1885 | 7 | #765 |
| 1884 | 6 | #848 |
| 1883 | 10 | #597 |
| 1882 | 12 | #540 |
| 1881 | 9 | #595 |
| 1880 | 17 | #425 |
Nicknames for Cassius
Names like Cassius
Names given in the same years and the same naming tradition, with a similar sound.
Elias, Tobias, Cillian, Elijah, Lorenzo, Oliver, Remy, Caleb, Carter, Roman, Cooper, Matteo
Names related to Cassius
More Latin names
Olivia, Leo, Aurora, Emily, Florence, Mabel, Luna, Nora, Rosie, Emilia, Max, Nova, Lucy, Julian, Clara, Anthony
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Cassius: name meaning, origin and popularity”, https://www.nameling.co.uk/names/cassius, updated 20 October 2026.