Meaning and history
Roman family name possibly derived from Latin cassus meaning "empty, vain." Notable bearers include Lucius Cassius Dio, a 3rd-century Roman historian, and several early saints. In modern times, it was the original first name of boxer Muhammad Ali (1942–2016), who was named after his father Cassius Clay, himself named after the American abolitionist Cassius Clay (1810–1903).
20062006: 169 births, rank #1,058
2007: 164 births, rank #1,115
2008: 213 births, rank #946
2009: 199 births, rank #991
2010: 195 births, rank #1,005
20112011: 240 births, rank #873
2012: 218 births, rank #933
2013: 300 births, rank #757
2014: 346 births, rank #704
2015: 406 births, rank #644
20162016: 449 births, rank #600
2017: 467 births, rank #582
2018: 460 births, rank #594
2019: 554 births, rank #514
2020: 602 births, rank #488
20212021: 607 births, rank #487
2022: 541 births, rank #548
2023: 509 births, rank #575
2024: 516 births, rank #569
20252025: 504 births, rank #582
Cassius moved from #569 to #583 for boys between 2024 and 2025. Its highest annual birth count came in 2021, with 607 births.