Cognomen Juday (Juday 
) , in the world, is a rare surname. The cognomen Juday is habitual in the United States, where it is a rare surname, Malaysia, where it is a very rare surname, and Canada. In absolute terms, this name is the most popular in the United States, Malaysia, and Brazil. Also, Juday is the forename as well as the last name.
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| Juday | Philippines, United States, India, Democratic Republic of the Congo, Saudi Arabia |
| robert juday American high jumper (1900-1988), US (b. 1900) |
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| karen juday American victim of the September 11 attacks serving as administrative assistant for Cantor Fitzgerald, US (b. 1949) |
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| jeff juday American actor, US |
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| glenn patrick juday |
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| juday ibn nadhir |
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| richard juday |
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