Last name Gontarz (Gontarz 
) , all around the world, is quite a rare family name. The last name Gontarz is habitual in Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and Norway. In absolute terms, this name is the most popular in Poland, the United States, and Brazil. More frequently, Gontarz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Gontarz | Brazil, United Kingdom, United States, Germany, Poland |
| ryszard gontarz Polish journalist, PL (b. 1930) |
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| henryk gontarz PL (b. 1934) |
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robert gontarz PL (b. 1993) |
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| krystian gontarz Polish singer, participant of The Voice Kids, PL |
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| andrzej gontarz researcher |
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| marianne gontarz GB |
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