Kastin is a contemporary Anglo-American male name, likely coined as a phonetic variant of established “-tin” names such as Austin, characterized by its two-syllable structure and crisp consonant framework. Its etymological roots remain undocumented in traditional onomastic records, suggesting a modern American invention that foregrounds the hard “K” onset for a sense of technical precision. Pronounced /ˈkæstɪn/ (KAS-tin), the name also carries a lexical resonance with the English root “cast,” evoking qualities of formation, resilience and structural solidity. Social Security Administration data show that since its first entry into the top 1000 in 2000—when six newborns were registered under the name (rank 809)—annual occurrences have ranged from five to twelve, with peaks in 2015 and 2018 (ranks 903 and 900) and seven in 2023 (rank 922). This steady, niche adoption underscores Kastin’s appeal to parents seeking a familiar yet technically infused choice that balances understated strength with contemporary flair.