Cognomen De Mattia (De Mattia 
) , across the world, is quite a rare family name. The family name De Mattia is habitual in Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Italy, Argentina, and Germany. Much less frequently, De Mattia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| De Mattia | Germany, France, Argentina, Italy, United States |
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martin de mattia German installation artist, DE (b. 1963) |
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| ernesto de mattia italian alpine skier, IT (b. 1972) |
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| fabrizio de mattia researcher |
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| luca de mattia researcher |
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| marco de mattia researcher in particle physics |
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| jonathan salvatore de mattia Italian management engineer, IT (b. 1989) |
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Ana, Gino, Lino, Lisa, Luca, Luis, Luke, Jose, John, Joan, Juan, Tony, Timo, Elsa, Enzo, Enza, Etel, Ezio, Hugo, Vale, Vito, Ivan, Gina, Dora, Dina, Ruth, Ani, Amy, Reb, Isa, Ugo, Mara, Maru, Maya, Sara, Aldo, Igor, Anna, Ciro, Kego, Kyle, Paty, Pina, Pino, Raul, Rosa, Rose, Rita, Adam, and Omar