Surname Ruark (Ruark 
) , throughout the world, is quite a rare last name. The family name Ruark is habitual in the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada. In absolute terms, it most frequently occurs in the United States, Canada, and the United Kingdom. Very seldom, Ruark is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ruark | Philippines, United Kingdom, United States, South Africa, Canada |
| j. edward ruark Hymn writer (b. 1850) |
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| arthur edward ruark American physicist, US (b. 1899) |
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| robert ruark American writer (1915-1965), US (b. 1915) |
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| henry gibbons ruark (b. 1908) |
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| christopher d ruark researcher ORCID ID = 0000-0003-1032-5696 |
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| allison ruark professor of applied health science |
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| john douglas ruark Ph.D. Massachusetts Institute of Technology 1998 |
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| elise ruark researcher |
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