Last name Gerhardt (Gerhardt 
, Герхард 
, Gayheart 
) , around the globe, is a common cognomen. The surname Gerhardt is characteristic of Germany, where it is quite a common surname, Denmark, where it is quite a rare surname, and Hungary. In absolute terms, it is the most numerous in Germany, the United States, and Brazil. Very seldom, Gerhardt is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gerhardt | Brazil, United States, South Africa, Canada, Germany |
| Герхард, Герхардт | Ukraine, Russia |
| Gayheart | United Kingdom, Ghana, United States, New Zealand, Canada |
Geert, Gellert, Gellért, Gerald, Gerallt, Gerard, Gerardo, Gerardus, Gerat, Gerd, Gerhard, Geri, Gerold, Gerrit, Gert, Giraldo, Girard, Gjert, Gérald, Gérard, Гелерт, Геллерт, Геральд, Герардус, Гергардт, Геррит, Герт, Джеральд, Джерард, Джерард, Жерар, Джерардо, Жерар, Жеро, Херардо, ג'ראלד, ג'רארד, גרהרד, ז'ראר, جيرار, جيرارد, جيرالد, غيرت, ゲルト, ジラード, 吉拉德, 杰拉德, 格特, and 赫特
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paul gerhardt German Lutheran theologian and hymn writer (1607-1676), DE (b. 1607) |
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| gerhardt keiser (b. 1637) |
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| franciscus gerhardt CZ (b. 1691) |
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| johann friedrich gerhardt (b. 1712) |
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| marcus rudolf balthasar gerhardt 1735--1805; G.; Gerhardt, M. R. B.; Gerhardt, Marcus Rudolf Balthazar (b. 1735) |
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gerhardt wilhelm von reutern German painter (1794-1865), DE (b. 1794) |
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| johanna maria regina gerhardt (b. 1743) |
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| gerhardt thilenius (b. 1745) |
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eduard gerhardt German artist (1812-1888), DE (b. 1812) |
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carl immanuel gerhardt German mathematician and historian of mathematics (1816-1899), DE (b. 1816) |
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charles frédéric gerhardt French chemist (1816-1856), FR (b. 1816) |
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julius gerhardt German teacher and entomologist (1827–1911) (b. 1827) |
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carl jakob adolf christian gerhardt German physician, DE (b. 1833) |
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gustave adolphe gerhardt French architect, FR (b. 1843) |
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karl gerhardt American artist, US (b. 1853) |
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