Family name Calfat (Calfat 
) , across the world, is a rare last name. The family name Calfat is characteristic of Brazil, where it is a very rare surname, Portugal, and Canada. Measured by absolute frequency, it is the most numerous in Brazil, Argentina, and Canada. Very seldom, Calfat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Calfat | Brazil, Argentina, Canada, United States, Portugal |
| demétrio calfat Brazilian-lebanese businessman, LB (b. 1880) |
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| miguel calfat Brazilian-lebanese businessman, LB (b. 1882) |
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Mr, Salwa, Sonia, Aline, Bruno, Katia, Kelly, Paulo, René, Renã, Mitre, David, Gilda, Leyla, Livia, Louis, Lucia, Lucas, Luisa, Luzia, Jayme, Daisy, Mauro, Marco, Mario, Ms, Ana, Ava, Marc, Alex, Alec, Ciro, Raul, Rene, Liza, Luiz, Jose, Joao, Tufy, Nely, Elie, Hugo, Vera, Inti, Maria, Marie, Jafet, and Jorge