Surname Ratzlaff (Ratzlaff 
) , in the world, is quite a rare last name. The surname Ratzlaff is characteristic of Paraguay, where it is quite a rare surname, Luxembourg, and Canada. Not in comparison with a country's population, it is commonest in the United States, Germany, and Paraguay.
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| Ratzlaff | Germany, Canada, Paraguay, Brazil, United States |
| abraham ratzlaff (b. 1850) |
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siegfried ratzlaff German painter, DE (b. 1934) |
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| erich l. ratzlaff (b. 1911) |
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| erich l. ratzlaff (b. 1911) |
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| raymond ratzlaff Canadian politician, CA (b. 1931) |
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| leonard ratzlaff Canadian conductor, CA (b. 1949) |
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| chris ratzlaff researcher |
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| micah ratzlaff college basketball player (1999–2000) Oral Roberts |
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| matthew ratzlaff researcher (ORCID 0000-0001-7829-2531) |
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| robert a ratzlaff researcher (ORCID 0000-0002-1496-3727) |
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| bennie ratzlaff college basketball player (1956–1956) Oklahoma City |
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| keith ratzlaff |
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