Unio

Unio can refer to:

Unio, a genus in the family Unionidae (freshwater mussels)
Utdanningsgruppenes Hovedorganisasjon (UNIO), a national trade union center in Norway.
UNI/O, an asynchronous serial bus for low speed embedded communication

Unió means "union" in the Catalan language and is used by a number of political parties and other organizations in Catalan-speaking regions, including:

Unió Democràtica de Catalunya, a political party in Catalonia
Convergència i Unió, a political party in Catalonia
Unió Valenciana, a political party in Valencia
Unió Mallorquina, a political party on Majorca

Unio also means "union" in Latin and can refer to:

Unio Mystica, a term describing the concept of the union of the individual human soul with the Godhead.
Unio Trium Nationum, a 1438 pact formed by the three Estates of Transsylvania

Translation

The word "Unio" occurs as such in the following languages: English, Esperanto.