Surname Iunius (Giunio 
, Iunius 
, Юній 
) , around the globe, is a rare family name. The last name Iunius is habitual in Croatia, where it is quite a rare surname, Israel, where it is a very rare surname, and Italy. In absolute terms, it is the most numerous in Croatia, Italy, and Chile. Also, Iunius is the forename as well as the last name.
| c. iunius tribune of the plebs 423 BC (b. 500) |
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| q. iunius Roman citizen of Hispanic origin who participated in the Gallic War |
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