Home > Cas- Names

Boy Names Starting with Cas-

Cas- baby names and what they mean, with 17 results. Adoption of these boy names was at its most widespread in the year 1990 (ADOPTION OF 0.2%) and has remained as widespread to this day (ADOPTION 0.2%, DOWN 6%), but with names like Casper becoming less in vogue. Case (#551), Cash (#253), Cason (#469) and Cassius (#602) are four of the more fashionable baby names in this list, while Caskey (TOP 4%) and Casto (3%) are familiar Cas- last names. Here is the list of Cas- names for girls.

Cas- names

Casar - Caswell

Var. of Caesar. Origin fr. Latin word. "Head of hair." Camar is a somewhat common kid's name. See also Caspar.


Root fr. French language. "Box." Common as surname. Compare Case (TOP 1%) with common last names Crease (TOP 62%), Pase (34%), which also end with -ase. See also Chas.

Casey and variants

Casey1, var. Case2
Source fr. Irish, Gaelic language. "Alert, watchful." Adoption of Casey and Case as boys' names in 2016 was 11.4% less than the previous decade.


Var. of Kacey. Variant of Casey or a creation .. Casey became less popular in 2016, dropping -9 rankings as a birth name to reach #560. Cross-gender use.

Cash and variants

Cash1, var. Casshe
Short form of Cassius (Latin) "vain" .. Adoption of Cash and Casshe as baby names in 2016 was up 99% compared to 10 years ago.

Casimir and variants

Casimir, var. Casmir, Casimiro, Casmire, Casimeer
Origin fr. Slavic element. "Famous destroyer (of peace)." Casimeer and variants are rarely found as first names.


Var. of Carson. Source fr. Scottish, Old English elements. "Son of the marsh-dwellers." Also used for girls. Cason is a rarely used first name, registering frequently (TOP 2%) as a last name.

Caspar and variants

Caspar, var. Cass1, Casper1
From Persian word. "Treasurer." Adoption of Casper and variants was more pronounced among parents during 1880-1889 and is now diminished, with Casper becoming less trendy.


Var. of Gaspard. Stems fr. French, Persian languages. "Treasurer." Casper has faded in popularity as a birth name since the 1880s. See also Caster.


.. the Caspian Sea is the largest .. Rare. Caspian is not listed in the US Demographics. See also Cassian.

Top 2000 baby names ranking of Cas- names: Case, Casey, Cash, Casimir, Casimiro

Top 2000 baby names ranking of Cas- names: Casmir, Cason, Casper, Caspian, Cass

Top 2000 baby names ranking of Cas- names: Cassidy, Cassius, Caswell

Cassander, var. Cassandero, Casandro, Casander
From Spanish, Greek words. "Brother of heroes." Casander and variants are not in the Top 2000.

Derived fr. Latin language. .. Name of several early saints. Not in popularity charts. See also Caspian.

Cassidy and variants

Cassidy, var. Cassidey, Cassedy, Cassady, Cass2
Source fr. Irish, Welsh, Gaelic languages. "Curly-headed; ingenious, clever." Cassady, Cassedy and Cassidey are more exclusive as baby names among the versions of Cassidy.

The archangel who watches over Capricorns. Cassel (UPPER 5%), Cassil (86%) are popular surnames.

Cassius and variants

Cassius, var. Cassio, Cass3, Cash2
Based on Latin. .. An old Roman family clan name. Usage of Cassius and variants as baby names in 2016 was a lot more than 10 years ago.

Castor, var. Castorio, Caster
Origin fr. Greek language. "Beaver." Caltor and Cascor are creative variations.


Form of Carswell. From Old English element. "Well where the watercress grows." Caswell is commonplace as a boys' name compared to other forms.

Quick Reference

Summary Index of names [and variants] for Cas- names for boys.

1. Casar - Caswell
Caesar [Casar], Case, Casey [Case], Kacey [Casey], Cash [Casshe], Casimir [Casmir, Casmire, Casimiro, Casimeer], Carson [Cason], Caspar [Cass, Casper], Gaspard [Casper], Caspian, Cassander [Casander, Casandro, Cassandero], Cassian, Cassidy [Cass, Cassady, Cassedy, Cassidey], Cassiel, Cassius [Cash, Cass, Cassio], Castor [Caster, Castorio], Carswell [Caswell]

Usage comparison for Cas- names