Cognomen Твердохлиб (Твердохлиб 
, Tverdohlib 
, Tverdokhlib 
) , all over the world, is a rare last name. The last name Твердохлиб is habitual in Latvia, where it is a rare surname, Estonia, and Panama. Not in comparison with a country's population, this name is the most popular in Russia, Ukraine, and Latvia.
| VARIANT | COUNTRY |
|---|---|
| Твердохлиб | Kyrgyzstan, Russia, Belarus |
| Tverdohlib | United States, Ukraine |
| Tverdokhlib | Ukraine, Panama, Latvia, Czechia, United States |
| твердохлиб николай николаевич Ukrainian military personnel, UA (b. 1984) |
|