Cognomen Delff (Delff 
, Делфт 
) , around the globe, is a very rare surname. The family name Delff is characteristic of Denmark, where it is a rare surname, Germany, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Very seldom, Delff is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Delff | Germany, Denmark, United States |
| Делфт | Ukraine |
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jakob willemsz. delff painter from the Northern Netherlands (1550-1601), NL (b. 1550) |
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cornelis jacobsz delff painter from the Northern Netherlands (1570-1643), NL (b. 1570) |
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willem jacobsz. delff painter from the Northern Netherlands (1580–1638), NL (b. 1580) |
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| rochus delff Houbraken: (0), V1, p 61, NL (b. 1567) |
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| august delff German classical philologist and teacher, DE (b. 1824) |
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| hugo delff German philosopher, writer and theologian (1840-1898), DE (b. 1840) |
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| adrijaen cornelisz delff Dutch artist (active approximately 1643-1650) |
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