| Cas | Legendary son of Seidi. |
| Casa | A building used for human habitation. |
| Casandra | Unheeded prophetess. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. |
| Casca | The Tragedy of Julius Caesar' A conspirator against Caesar. |
| Cascata | A small waterfall or steep descent. |
| Case | Variant of Casey Alert: vigorous. |
| Caseareo | Relating to or resembling cheese. |
| Casee | A variant spelling of the name Casey. |
| Casen | Alternate Spelling: Cason. |
| Casey | Brave: Vigilant. |
| Cash | Diminutive of Caspar: Wealthy man. |
| Cashel | A stone fort or circular enclosure. |
| Cashesegra | Osage name meaning tracks of a large animal. |
| Cashlin | A small castle or fortified house. |
| Casidhe | A clever or ingenious Irish person. |
| Casie | "Same as the other Casey, Kacee, KC names I guess" |
| Casilda | A maiden of the battle or fortress. |
| Casimir | One who proclaims or brings peace. |
| Casimira | Command for peace |
| Casimire | Variant of Casimir: Bringer of peace; announcing peace. |
| Casimiro | Famous destroyer of all discord. |
| Casiphia | Money, covetousness. |
| Casleu | Rashness, confidence. |
| Casluhim | Hopes of life. |
| Casnar | Legendary nobleman. |
| Caspar | Derived from the Persian word for treasurer. |
| Casper | "Friendly, childlike, helpful" |
| Casperia | Second wife of Rhoetus. |
| Caspian | Referring to the sea between Asia and Europe. |
| Cass | A short form of names like Cassandra or Cassidy. |
| Cassadee | Cassadee is a feminine given name derived from the French surname 'Cassadée,' meaning 'bringer of peace.' |
| Cassady | Variant of Cassidy: Intelligent; from Caiside; curly-headed. |
| Cassandan | Name of One Kurosh the Greats Wife |
| CASSANDRA | myth name (a prophetess no one believed) |
| Cassandrea | Unheeded prophetess. Cassandra was a Trojan prophetess, daughter of King Priam. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. |
| Cassara | Prophet/princess |
| Cassaundra | Unheeded prophetess. Cassandra was a Trojan prophetess, daughter of King Priam. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. |
| Cassey | An Irish name meaning vigilant or watchful. |
| Cassi | Abbreviation of Cassandra. Unheeded prophetess. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. |
| Cassia | Named after the fragrant cinnamonlike spice. |