Cognomen Caldow (Caldow 
) , throughout the world, is a rare surname. The last name Caldow is characteristic of Australia, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United Kingdom. In absolute terms, it is commonest in Australia, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
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| Caldow | United Kingdom, Australia, United States, Canada, New Zealand |
| margaret caldow (born 1925) (b. 1925) |
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| eric caldow Scottish association football player and manager (1934-2019), GB (b. 1934) |
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| margaret caldow Australia netball international and coach (b. 1941) |
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| george clark caldow soldier of the Argyll and Sutherland Highlanders, GB |
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| christopher caldow researcher ORCID ID = 0000-0003-3516-8084 |
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| robert caldow researcher |
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| marissa k caldow researcher |
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| mina caldow [Fiddes] - 1910:1954 - Contralto singer, performing in Auckland in 1926, and living there at least from the early 1920s to 1954. She married barrister Henry Fiddes in 1926. |
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| john caldow |
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| chris caldow |
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