Nameling

Casi

Gender
Girl
Say it
KAS-ee
Origin
Greek
UK rank, 2025
#2,509 for girls

Casi is a girls' name of Greek origin. In 2025 it ranked 2,509th for girls in the UK (11 babies).

What does Casi mean?

Greek: spelling of Cassie; pet form of Cassandra; also used for Cassidy

Usually a short form of Cassandra, the doomed prophetess of Troy in Greek myth.

Meaning borrowed from Cassie. More on Wiktionary.

Is Casi a girl's or a boy's name?

Casi is a girls' name. In 2025, it was given to 11 girls in the UK. Too few boys were given it to be listed.

How popular is Casi in the UK?

Rank in 2025
#2,509among girls
Babies in 2025
11about 1 in 25,000 girls
Five-year trend
Steadydown 3% in five years
Same name in a class
under 1%chance among 15 girls

In 2025, 11 girls in the UK were named Casi, making it the 2,509th most popular name for girls. Five years earlier, in 2020, it was 2,159th. Its busiest year was 2017, with 15 girls.

Half of all the girls named Casi in the UK since 1996 were born between 2013 and 2021, the years shaded on the chart below.

In 2025, 132 girls in the UK were given Casi or a name that sounds the same. With every name's spellings counted this way, that ranks #370, up from #2,509 for this spelling alone.

Among girls in 2025, it was 2,438th in England and Wales.

2002Busiest: 15 in 20172025
Casi in the UK, year by year
YearGirlsRank
202511#2,509
202411#2,480
202312#2,329
202210#2,615
20218#3,082
202013#2,159
20199#2,792
201813#2,198
201715#2,011
201610#2,692
201512#2,328
201411#2,462
20136#3,719
201210#2,666
20114#4,980
20107#3,308
20095#4,141
20080–
20075#3,858
20062#6,613
20054#4,150
20043#4,789
20030–
20026#2,691

How popular is Casi in the US?

No girls in the US were given it in 2025, or too few to be listed. Its busiest year was 1989, with 56 girls. It first appears in the records in 1962.

Half of all the girls named Casi in the US since 1880 were born between 1980 and 1992, the years shaded on the chart below.

1962Busiest: 56 in 19892022
Casi in the US, year by year
YearGirlsRank
20225#15,300
20210–
20200–
20190–
20180–
20170–
20160–
20150–
20146#14,552
20130–
20125#16,863
20110–
20100–
20095#17,288
20080–
20078#12,671
20069#11,412
20055#16,455
20049#10,684
200311#9,043
200211#8,831
200116#6,614
200011#8,527
199918#5,655
199818#5,579
199727#4,004
199624#4,301
199515#5,953
199420#4,840
199331#3,501
199240#2,915
199148#2,544
199051#2,397
198956#2,164
198845#2,414
198750#2,154
198653#2,024
198532#2,859
198434#2,676
198342#2,271
198244#2,250
198145#2,231
198043#2,278
197942#2,273
197830#2,741
197722#3,365
197624#3,001
197527#2,743
197417#3,695
197323#2,914
197218#3,404
197115#3,941
197013#4,245
19697#5,972
19680–
19670–
19660–
19650–
19640–
19630–
19625#6,577

Nicknames for Casi

Names like Casi

Names given in the same years and the same naming tradition, with a similar sound.

Cadi Aoibheann Cassidy Caitlin Eireann Caoimhe Teagan Kiara Caragh Raegan Keira Bree

Other spellings of Casi

Cassie

Names related to Casi

Cassia Casie Cassi Caasi Casia Caysie Ceasia

More Greek names

Luca Theodore Sophia George Theo Lucas Sofia Alexander Sebastian Penelope Phoebe Margot Luke Chloe Sophie Zoe

Every Greek name

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, “Casi: name meaning, origin and popularity”, https://www.nameling.co.uk/names/casi, updated 20 October 2026.