Family name Laplaca (Laplaca 
) , in all the world, is quite a rare cognomen. The cognomen Laplaca is habitual in Argentina, where it is a rare surname, the United States, and Italy. Measured by absolute frequency, the name is most common in the United States, Argentina, and Brazil.
| VARIANT | COUNTRY |
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| Laplaca | Canada, Brazil, Italy, United States, Argentina |
| alison laplaca American actress, US (b. 1959) |
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| stephanie b laplaca researcher (ORCID 0000-0003-2094-9101) |
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| michelle c laplaca researcher |
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| derek laplaca researcher |
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| nicole laplaca Canadian actor, CA (b. 1986) |
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