Worldwide, Mietta (Mietta 
) is a rare girly first name. The given name Mietta is characteristic of Australia, where it is a rare female name, Italy, and South Africa, where it is a very rare girly name. Also, Mietta is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Mietta | Italy, Argentina, Switzerland, Australia, South Africa |
| mietta baracchi bavagnoli Italian politician, IT (b. 1940) |
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| mietta albertini Italian actor, IT (b. 1949) |
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| mietta o'donnell Australian restaurateur and food writer, AU (b. 1950) |
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| mietta lennes researcher |
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| mietta corli architect, librettist, director, set designer |
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