Last name Goodby (Goodby 
) , in all the world, is a rare surname. The family name Goodby is characteristic of the United Kingdom, where it is a rare surname, New Zealand, and Australia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in the United Kingdom, the United States, and China. Much less frequently, Goodby is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Goodby | Australia, China, Canada, United States, United Kingdom |
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james goodby American diplomat, US (b. 1929) |
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jeff goodby American advertising executive, IO |
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| donald goodby (b. 1929) |
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| j. w. g. goodby (b. 1952) |
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| john w goodby (b. 1952) |
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| emmeline goodby researcher |
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| john goodby chemist |
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