Cognomen กฤษณัฐ (Kritsanut 
, กฤษณัฐ , Krisnat 
) , across the world, is an extremely rare last name. The cognomen กฤษณัฐ is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, กฤษณัฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กฤษณัฐ, Kritsanut | Thailand |
| Krisnat | India, United States, Thailand |
Kridtanat, Krinthanut, Kritisanut, Kritsananut, Kritsanutt, and Krsnat
ธูปพุดซา, กันทาผาม, ศาสตร์สมัย, โรจนสุขสกุล, อัครเดชาถิรกุล, and อัจฉริยวิริยะ