Last name Keffer (Kafar 
, Keffer 
, Кеффер 
) , around the world, is quite a common family name. The last name Keffer is characteristic of Azerbaijan, where it is quite a rare surname, the United States, where it is a rare surname, and Canada. In absolute terms, this name is the most popular in the United States, Azerbaijan, and Brazil. Likewise, Keffer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kafar | Azerbaijan, United States, Poland, Turkey, India |
| Keffer | Brazil, Democratic Republic of the Congo, Canada, United States, Turkey |
| Кеффер | Russia |
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karl keffer Canadian golfer, CA (b. 1882) |
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| frank keffer American baseball player, US (b. 1861) |
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| frances alice keffer American artist, US (b. 1881) |
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| jim keffer Texas State Representative, US (b. 1953) |
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| bill keffer lawyer and Texas state legislator, US (b. 1958) |
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| dick keffer college basketball player (1953–1956) Louisville |
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| david j keffer researcher |
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| jessica keffer researcher ORCID ID = 0000-0002-0302-3588 |
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| dicky keffer college basketball player (1975–1977) Vanderbilt |
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| heinrich keffer |
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