| Casey | - | United States Name | Cash | - | English Name |
| Cashel | - | Irish Name | Cashlin | - | Irish Name |
| Cashlyn | - | American Name | Cashton | - | English Name |
| Casie | - | American Name | Casimir | - | Swiss Name |
| Casimira | - | Slavic Name | Casiphia | - | Biblical Name |
| Casluhim | - | Biblical Name | Casmara | - | Maori Name |
| Cason | - | Scottish Name | Caspar | - | Teutonic Name |
| Casper | - | Persian Name | Caspian | - | Teutonic Name |
| Caspian | - | English Name | Caspian | - | United States Name |
| Cass | - | Teutonic Name | Cassadee | - | Irish Name |
| Cassady | - | Irish Name | Cassandra | - | Maori Name |
| Cassara | - | American Name | Cassi | - | American Name |
| Cassia | - | Muslim Name | Cassiana | - | Latin Name |
| Cassianna | - | Latin Name | Cassiano | - | Portuguese Name |
| Cassidee | - | Irish Name | Cassidi | - | Irish Name |
| Cassidie | - | Irish Name | Cassidy | - | Irish Name |
| Cassie | - | English Name |
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