The baby name Casius is a Male name , 3 syllables long and is pronounced /ˈkæs.i.əs/ (KAS-ee-əs),/ˈkæʃ.əs/ (KASH-əs) — variant pronunciation often used for Cassius.
Casius is Latin in Origin.
The baby name Casius is a Male name , 3 syllables long and is pronounced /ˈkæs.i.əs/ (KAS-ee-əs),/ˈkæʃ.əs/ (KASH-əs) — variant pronunciation often used for Cassius.
Casius is Latin in Origin.
Casius is a modern respelling of Cassius, a Roman family name (nomen) probably of Etruscan origin. Because the Latin word cassus means "empty, hollow," some later writers connected the name to that term, but the etymology is uncertain and may be pre-Latin. The spelling Casius sometimes gets conflated with the ancient toponym/theonym Casius (Greek Kasios), yet as a given name in English it tracks the Cassius line.
Usage traces back to the Roman Republic and Empire (e.g., Gaius Cassius Longinus; the historian Cassius Dio), and it entered English consciousness through Shakespeare’s Julius Caesar. In the 20th century it gained wider notice via Cassius Clay (Muhammad Ali). Casius itself remains rare but has contemporary appeal. Variants and relatives include Cassius, Kassius, Cassian/Casian, and the feminine Cassia; short forms Cas, Case, and Cash are common nicknames.
Based on birth registration data from national statistics agencies.
| Country | Gender | Year | Rank | Born | of |
|---|---|---|---|---|---|
| BW | Boys | 0 | #154 | 1 | 4,685 |
| NA | Boys | 0 | #251 | 3 | 6,830 |
| GR | Boys | 0 | #273 | 1 | 6,912 |
| JM | Boys | 0 | #292 | 2 | 6,876 |
| KZ | Boys | 0 | #296 | 1 | 6,578 |
| CZ | Boys | 0 | #303 | 3 | 6,530 |
| PL | Boys | 0 | #340 | 1 | 6,459 |
| PH | Boys | 0 | #408 | 1 | 11,440 |
| ZA | 0 | #474 | 1 | 14,421 | |
| AR | Boys | 0 | #483 | 1 | 7,628 |
| IR | Boys | 0 | #565 | 1 | 10,162 |
| BO | Boys | 0 | #622 | 1 | 9,244 |
| BR | Boys | 0 | #785 | 1 | 12,213 |
| KW | Boys | 0 | #806 | 1 | 18,755 |
| United States | Boys | 2023 | #894 | 5 | 7,053 |
| PE | Boys | 0 | #924 | 3 | 14,506 |
| CO | Boys | 0 | #980 | 2 | 15,656 |
| NG | Boys | 0 | #1,001 | 1 | 16,906 |
| MX | Boys | 0 | #1,033 | 1 | 16,355 |
| IN | Boys | 0 | #1,039 | 1 | 16,750 |
| ZA | Boys | 0 | #1,145 | 34 | 25,619 |
| MX | Girls | 0 | #1,267 | 1 | 17,781 |
| SA | Boys | 0 | #1,691 | 1 | 28,008 |
Casius is popular in 21 countries — most recent births per country:
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