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%, UP 0.1%), but with names like Casimir becoming less in vogue. The trendier names for newborns here are Case (#506), Cash (#276), Cason (#550), Caspian (#801) and Cassius (#596), 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." Casey is more familiar than the rest, though Case is now more regularly used, while Casey is now less popular.


Var. of Kacey. Variant of Casey or a creation .. Casey is in the Top 2000. Cross-gender use.

Cash and variants

Cash1, var. Casshe
Short form of Cassius (Latin) "vain" .. Adoption of Cash and Casshe as baby names in 2018 was up 3.4% 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. Adoption of Cason as a boys' name in 2018 was 26.4% more than 10 years ago.

Caspar and variants

Caspar, var. Cass1, Casper1
From Persian word. "Treasurer." Casper was among 2018's Top names.


Var. of Gaspard. Stems fr. French, Persian languages. "Treasurer." Uncommon, with usage of 0.007% for Casper as a birth name in 2018, higher than 0.007% a year ago. See also Caster.


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

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: Cassian, 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. Cassian is rarely used as a masculine name. See also Caspian.

Cassidy and variants

Cassidy, var. Cassidey, Cassedy, Cassady, Cass2
Source fr. Irish, Welsh, Gaelic languages. "Curly-headed; ingenious, clever." Cassidy is in the Top 2000.

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 2018 was 21.8% 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