BabyNamesMap

Baby names › Boys

Cassius

Meaning not yet sourced

Editor’s note Up from #644 in 2015 to #582 in 2025 in the US

CommonRare
Rank 2015: #644, 2016: #600, 2017: #582, 2018: #594, 2019: #514, 2020: #488, 2021: #487, 2022: #548, 2023: #575, 2024: #569, 2025: #5821 in 3,389 boys in the US, 2025#582 · steady · was #644 in 2015
CommonRare
Rank 2015: #472, 2016: #369, 2017: #403, 2018: #333, 2019: #293, 2020: #314, 2021: #278, 2022: #272, 2023: #263, 2024: #283, 2025: #3191 in 1,942 boys in E&W, 2025#319 · rising · was #472 in 2015

Boy’s name · Latin · /ˈkæsi.əs/

What Cassius means

Meaning not yet sourced. Wiktionary has no word-by-word meaning for Cassius yet, and we don’t write our own.

Editor’s note Up from #644 in 2015 to #582 in 2025 in the US Worked out from the official US and England & Wales counts, not a meaning.

How popular is Cassius?

US 2025
#582
504 babies
▼ 13 vs 2024
England & Wales 2025
#319
140 babies
▼ 36 vs 2024
Scotland
–
Not listed

US: Steady: #644 in 2015, #582 now. England & Wales: Rising: up from #472 in 2015.

00.5118801920196020002025
US, 1880–2025England & Wales, 1996–2025Babies per 1,000 boys born. Dot: biggest US share (2020)

Biggest US share so far: 2020, when 602 boys got the name (#488 that year). First in the US records in 1880.

How common

  • About 1 in 3,389 baby boys in the US in 2025
  • About 1 in 1,942 baby boys in England and Wales in 2025

“1 in N” divides by all listed births for that sex. The US list leaves out names given to fewer than 5 babies, and the UK lists leave out names given to 2 or fewer, so the real figure is a little rarer than shown.

Where in the US

Most popular in HI (2.06 per 1,000 boys), ME (1.82 per 1,000 boys), NM (1.08 per 1,000 boys) in 2025.

AK
ME
WI
VT
NH
WA
ID
MT
ND
MN
IL
MI
NY
MA
OR
NV
WY
SD
IA
IN
OH
PA
NJ
CT
RI
CA
UT
CO
NE
MO
KY
WV
VA
MD
DE
AZ
NM
KS
AR
TN
NC
SC
DC
OK
LA
MS
AL
GA
HI
TX
FL
FewerMore · grey: under 5 babies, not listed

SSA state data, 2025. Share of all listed boys born in each state.

US vs UK

Cassius is #582 in the US and #319 in England & Wales (2025).

Rank 2025BabiesHow commonRank 2015
US#5825041 in 3,389#644
England & Wales#3191401 in 1,942#472
Scotland––––

Same sex as this page (boys). SSA (US), ONS (England and Wales), NRS (Scotland).

Boy or girl?

In 2025, 99.9+% of US babies named Cassius were boys.

GirlsBoys
US 20250504
England & Wales 20250140
US all years since 1880309,736
England & Wales since 199602,472

Counts below the publishing threshold (US 5, UK 3) are not included.

How to say it

/ˈkæsi.əs/, /ˈkæ.ʃəs/

IPA from Wiktionary.

Other spellings parents chose in 2025

  • Kassius63 US · 16 E&W
  • Kasius6 US

Names that sound the same and differ by a letter or two, with baby counts for the same sex. US and E&W counts.

If you like Cassius

Boys

  • Roman#42Editor’s note Climbing fast in the US: #102 in 2015, #42 in 2025
  • Leo#19“lion”
  • Bennett#40Form of Benedict, meaning “blessed, well spoken of”
  • Atticus#281“the Attic, the Athenian, a cognomen”
  • Augustus#407“majestic, venerable”
  • Lucas#10Editor’s note Up from #16 in 2015 to #10 in 2025 in the US. About 1 in 170 US boys in the 2025 records

For a sister

  • Zara#212“flower”
  • Lucille#237Editor’s note Peaked in the US in 1920, with 7,989 babies; 1,314 in 2025
  • Camilla#361Editor’s note Up from #374 in 2015 to #361 in 2025 in the US
  • Aurora#15Italian, from Latin Aurōra, meaning “dawn, sunrise”
  • Renata#481“reborn”
  • Emilia#45Variant of Emily, meaning “rival, emulator”

Picked from the US top 1,000 in 2025: names Wiktionary also files under Latin, whose US popularity since 1990 rose and fell most like Cassius’s. Rank is US 2025.

Jump to a random name page, or roll from every name on the home page.