Surname Kilby (Kilby 
, کلبی, キルビー) , in all the world, is quite a common cognomen. The family name Kilby is characteristic of Australia, where it is quite a rare surname, the United Kingdom, and New Zealand. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and Australia. Much less frequently, Kilby is the forename as well as the last name.
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| Kilby | Australia, Canada, United States, New Zealand, United Kingdom |
| richard kilby English priest and scholar (b. 1560) |
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| christopher kilby economist (Villanova University) (b. 1705) |
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thomas kilby American politician (1865–1943), US (b. 1865) |
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frank kilby New Zealand rugby union player and administrator, NZ (b. 1906) |
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jack clair kilby American electrical engineer (1923-2005), US (b. 1923) |
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| arthur forbes gordon kilby recipient of the Victoria Cross, GB (b. 1885) |
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bob kilby British speedway rider, GB (b. 1944) |
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| clyde s. kilby American academic (1902-1986), US (b. 1902) |
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| kilby snow American musician (1905-1980), US (b. 1905) |
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| kilby macdonald Canadian ice hockey player, CA (b. 1913) |
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| michael kilby British politician (1924-2008), GB (b. 1924) |
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| philip edwin kilby b.4 February 1925 d.7 July 1991 (b. 1925) |
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cody kilby American bluegrass musician |
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brad kilby American baseball player, US (b. 1983) |
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| peter kilby American economist (b. 1935) |
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