Last name Blackerby (Blackerby 
) , all around the world, is quite a rare cognomen. The last name Blackerby is characteristic of the United States, where it is a rare surname, Japan, where it is a very rare surname, and New Zealand. In absolute terms, it is commonest in the United States, Japan, and China.
| VARIANT | COUNTRY |
|---|---|
| Blackerby | Japan, United Kingdom, Canada, China, United States |
| richard blackerby English preacher (b. 1574) |
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| george blackerby American baseball player (1903-1987), US (b. 1903) |
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