Surname Hartmanis (Hartmanis 
) , all over the world, is a rare cognomen. The last name Hartmanis is characteristic of Northern Europe, particularly Latvia, where it is quite a common surname, Estonia, where it is a rare surname, and Sweden. Not in comparison with a country's population, it is commonest in Latvia, Sweden, and the United States.
| VARIANT | COUNTRY |
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| Hartmanis | Poland, Sweden, Latvia, United States, Germany |
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juris hartmanis Latvian computer scientist, LV (b. 1928) |
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| kārlis hartmanis (b. 1883) |
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| aldis egils hartmanis (b. 1929) |
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| jānis hartmanis author, LV (b. 1957) |
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| leonard hartmanis |
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Mr, Jānis, Edgars, Emīls, Einars, Helena, Oskars, Martins, Silvija, Annabel, Lauris, Kaspars, Roberts, Ritvars, Leonard, Jessica, Katriana, Dzintars, Nicholas, Mārtiņš, Alexander, Patrick, Professor, Philip, Amanda, Mã, Ana, Mara, Alex, Toms, Niks, Elly, Eric, Maris, Krists, Silva, Linda, Janis, Juris, J Nis, Elena, Edgar, Emils, Martin, Arturs, Carol, and Christopher