Cognomen Karstoft (Karstoft 
) , in all the world, is a rare last name. The family name Karstoft is characteristic of Denmark, where it is quite a rare surname, Germany, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Karstoft | Germany, Denmark, United States |
|
ida karstoft Danish athlete (b. 1995) |
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| margaret anderson karstoft (b. 1938) |
|
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| kristian karstoft researcher |
|
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| karen-inge karstoft researcher |
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| benedikte karstoft Danish association football player (b. 1994) |
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Mr, Richard, Gertrud, Johanna, Marianne, Margaret, Benjamin, Kirsten, Birgitte, Johannes, Jeanette, Stephanie, Anne-Mette, Charlotte, Benedikte, Kristian, Kenneth, Steffen, Oliver, Ib, Ida, Anna, Anne, Line, Lone, Jens, Signe, Peder, Peggy, Jakob, Jeppe, Julie, Niels, Martin, Karen-Inge, and Benjaminchristoffer