| Cath | Name of a monster |
| Cathair | A name meaning battle warrior. |
| Cathal | Strong in battle |
| Cathall | A name meaning mighty in battle. |
| Cathaoir | A name meaning battle warrior. |
| Cathaoirmore | A name meaning great warrior. |
| Catharina | A name meaning pure or clear. |
| Catharine | Form of the Greek Catherine meaning pure |
| Cathasach | A name meaning the vigilant one. |
| CATHBAD | meaning unknown |
| Cathee | A name meaning pure or innocent. |
| Cathenna | "Version of Cassima, a greek princess. also version of Greek Athena. Godess of war and Wisdom" |
| Catherin | A name meaning pure or clear. |
| Catherina | A name meaning pure or clear. |
| Catherine | Derived from the Greek for pure. |
| Catheryn | A variant meaning pure or clear. |
| Catheryna | A feminine name meaning pure one. |
| Cathey | A diminutive meaning pure soul. |
| Cathi | Form of the Greek Catherine meaning pure. |
| Cathia | Form of the Greek Catherine meaning pure. |
| Cathicen | Variant of Catherine: Pure, clear. Form of the Latin Katharina, from the Greek Aikaterina. |
| Cathie | Form of the Greek Catherine meaning pure. |
| CathIyn | A modern spelling meaning pure. |
| Cathleen | Form of the Greek Catherine meaning pure |
| Cathlin | An Irish form meaning pure one. |
| Cathmor | A Gaelic name meaning great battle. |
| Cathmore | A name meaning great warrior. |
| Cathrine | Form of the Greek Catherine meaning pure. |
| Cathryn | A classic name meaning pure one. |
| Cathy | Form of the Greek Catherine meaning pure. |
| Catia | Italian name meaning 'pure' or 'chaste', derived from the Latin word 'catia', a diminutive form of 'casta'. |
| Catigern | A name meaning battle lord. |
| Catlee | A meadow of wild cats. |
| Catlin | Variant of Katherine meaning pure |
| Catlina | Pure and clear beauty. |
| Catline | Variant of Katherine meaning pure |
| Catlyn | Variant of Katherine meaning pure |
| Cato | Wise and allknowing. |
| Caton | Variant of Cato: Intelligent; shrewd. |
| Catori | A spirit of the birds. |