Family name Harianja (Harianja 
) , all over the world, is a common surname. The last name Harianja is habitual in Indonesia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Italy, where it is a very rare surname. Much less frequently, Harianja is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Harianja | Indonesia, Italy, Malaysia, Singapore, United States |
| sumurung samosir harianja Indonesian politician (born 1953 in Pangururan), ID (b. 1953) |
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| kharlison harianja ID (b. 1956) |
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| oloan harianja ID (b. 1960) |
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| alfonsus h harianja researcher |
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