Cognomen Katag (Katag 
) , in all the world, is a very rare family name. The cognomen Katag is habitual in Philippines, where it is a very rare surname, and India, where it is an extremely rare surname. Likewise, Katag is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Katag | United States, Germany, India, Philippines |