Cognomen Bártfai (Bártfai 
, Bartfai 
) , across the world, is quite a rare surname. The last name Bártfai is characteristic of Hungary, where it is quite a common surname, Sweden, where it is a rare surname, and Lithuania. Measured by absolute frequency, it is the most numerous in Hungary, the United States, and Canada. Much less frequently, Bártfai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bártfai | Hungary |
| Bartfai | Sweden, Czechia, Hungary, United States, Canada |
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bártfai-mager andrea Hungarian politician, HU (b. 1964) |
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| bártfai vilmos football player (1925–1988), HU (b. 1925) |
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| bártfai róbert football player (1937-2000), HU (b. 1937) |
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| bártfai tamás Hungarian neuroscientist, HU (b. 1948) |
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| bártfai béla HU (b. 1955) |
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| bártfai krisztián Canoe racer, HU (b. 1974) |
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| bártfai barnabás HU (b. 1969) |
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| erzsébet bártfai Hungarian Righteous Among the Nations, HU |
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| piri bártfai Hungarian Righteous Among the Nations, HU |
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| bártfai péter Hungarian rower, HU (b. 1991) |
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