Surname 三国 (三国 
, Mikuni 
) , all over the world, is a rare last name. The surname 三国 is habitual in Tanzania, where it is a rare surname, Portugal, where it is a very rare surname, and Japan. In absolute terms, it most frequently occurs in China, Tanzania, and the United States. More frequently, 三国 is the forename as well as the last name.
| 三国一夫 Japanese actor, JP (b. 1975) |
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