Cognomen Delphy (Delphy 
) , throughout the world, is a rare surname. The last name Delphy is characteristic of France, where it is a very rare surname, the United States, where it is an extremely rare surname, and Canada. Not in comparison with a country's population, it is commonest in India, France, and the United States. More frequently, Delphy is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Delphy | South Africa, United States, India, France, Democratic Republic of the Congo |
| richard delphy US Navy officer (b. 1795) |
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jean delphy French entomologist (1887-1961), FR (b. 1887) |
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christine delphy French sociologist, FR (b. 1941) |
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| jean delphy botanist |
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| luiz delphy |
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Li, Bailey, Boezec, Biswas, Dubray, Goudal, George, Leroux, Joseph, Thomas, Shaulis, Banzouzi, Plummer, Laignel, Johnson, Missimer, Chiffoleau, Chungath, Castillo, Varghese, Verhelle, Ferguson, Antony, Augustine, Sailas, Irvin, Hu, Joy, Mrey, Shai, King, Paul, Jose, John, Nium, Sarah, Sambo, Shine, Allen, Coste, Curry, Reyes, David, Davis, Nypaver, Hardy, Vigot, Maunet, and Rodriguez