Family name Pia (Pia 
, Piia 
, بيا 
, among others...) , around the world, is a common surname. The surname Pia is characteristic of Italy, where it is quite a rare surname, Luxembourg, and Philippines. Measured by absolute frequency, the name is most common in Philippines, Italy, and Indonesia. More prevalently, Pia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pia | Denmark, Germany, Philippines, Sweden, Italy |
| Piia | Denmark, Germany, Sweden, United States, Indonesia |
| بيا | Iran, Egypt, Sudan, Syria, Algeria |
| ピア | Japan |
| פיה | Israel |
| Пиа | Kazakhstan, Russia |
| fulvia pia mother of Emperor Septimius Severus (b. 150) |
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secondo pia Italian photographer, IT (b. 1855) |
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| joseph pia (b. 1833) |
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pio pia IT (b. 1900) |
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| maria pia, gräfin von praschma, freiin von bilkau 4 May 1869 Falkenberg - 10 Feb 1959 Herdringen (b. 1869) |
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| julius von pia Austrian earth scientist and geologist, AT (b. 1887) |
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| pascal pia French author, journalist, illustrator, scholar, FR (b. 1903) |
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| paule pia Belgian photographer, gallerist and painter (1920-2011), BE (b. 1920) |
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| isabelle pia French actress (1931-2008), FR (b. 1931) |
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| hans-werner pia DE (b. 1921) |
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| rina pia Belgian singer, BE (b. 1935) |
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| ulla pia Danish singer, DK (b. 1945) |
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| gabriella enrica pia Italian anthropologist, IT (b. 1950) |
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| franck pia French politician, FR (b. 1961) |
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| michaela srbová della pia CZ (b. 1967) |
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Cruz, Andersen, Castillo, Karlsson, Petersen, Pedersen, Gonzalez, Jacobsen, Johansen, Eriksson, Svensson, Williams, Schneider, Sørensen, Andersson, Rasmussen, Rodriguez, Johansson, Fernandez, Kristensen, Jørgensen, Mortensen, Christensen, Martinez, Nielsen, Berg, Lund, Silva, Smith, Perez, Reyes, Lopez, Olsen, Madsen, Fischer, Santos, Larsen, Jensen, Hansen, Flores, Müller, Schmidt, Knudsen, Thomsen, Nilsson, Garcia, and Christiansen