Last name Seaby (Seaby 
) , in the world, is a rare family name. The last name Seaby is habitual in the United Kingdom, where it is a rare surname, Australia, and Canada. Much less frequently, Seaby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seaby | Australia, India, United Kingdom, United States, Canada |
| herbert allen seaby British numismatist (1898-1979), GB (b. 1898) |
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| wilfred a. seaby British archaeologist and museum curator (1910-1991), GB (b. 1910) |
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| mark seaby Australian rules footballer (b. 1984) |
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