Last name Ledder (Ledder 
) , throughout the world, is a rare cognomen. The cognomen Ledder is habitual in Netherlands, where it is a rare surname, Norway, and Germany. In absolute terms, it is commonest in Netherlands, the United States, and Germany. Much less frequently, Ledder is the forename as well as the last name.
| john ledder Australian rower, AU (b. 1937) |
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| hetty ledder NL (b. 1943) |
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| glenn ledder Ph.D. Rensselaer Polytechnic Institute 1990 |
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| glenn ledder researcher |
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| ruth ledder researcher (ORCID 0000-0001-7613-6607) |
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| ruth g ledder researcher |
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| peter ledder NL (b. 1975) |
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