Cognomen Lydian (Lydian 
) , globally, is a rare surname. The cognomen Lydian is habitual in Israel, where it is quite a rare surname, Nigeria, where it is a very rare surname, and Honduras. Not in comparison with a country's population, it is the most numerous in Israel, Nigeria, and the United States. More prevalently, Lydian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lydian | Philippines, Nigeria, United States, Israel, Democratic Republic of the Congo |
| adrastos the lydian volunteer for the Greek cities resisting Macedon, honored by a statue |
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