Family name Lafay (Lafay 
) , across the world, is quite a rare last name. The last name Lafay is habitual in France, where it is quite a rare surname, Uruguay, where it is a rare surname, and Argentina. Measured by absolute frequency, it is commonest in France, the United States, and Argentina. Very seldom, Lafay is the forename as well as the last name.
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| Lafay | Canada, Brazil, France, United States, Argentina |
| pierre lafay FR (b. 1820) |
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| auguste lafay fluid mechanicist and instructor, FR (b. 1866) |
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| octave lafay FR (b. 1878) |
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| octave lafay (b. 1878) |
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| suzanne lafay (b. 1889) |
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| bernard lafay physician and politician from France, FR (b. 1903) |
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| henri lafay FR (b. 1924) |
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| gérard lafay French economist, Emeritus and writer, FR (b. 1940) |
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| jean-dominique lafay French economist, FR (b. 1944) |
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victor lafay French bicycle racer, FR (b. 1996) |
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| daniel lafay French politician, FR (b. 1947) |
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| michel lafay French politician, FR (b. 1947) |
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| jean-françois lafay (b. 1949) |
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| guy lafay French politician, FR (b. 1965) |
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| denis lafay French journalist (b. 1967) |
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