'''Tvarditsa''' may refer to:
*Tvarditsa, Sliven Province, capital of Tvarditsa Municipality, Bulgaria *Tvarditsa, Burgas Province, Bulgaria *Tvarditsa, Dobrich Province, Bulgaria *Tvarditsa Municipality, Bulgaria *Tvardița, town in Moldova *Tvarditsa Rocks, off the South Shetland Islands, Antarctica
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