Ionathan (nomen)
Ionathan, sive Ionathas, -ae,  est praenomen masculinum.

In linguis frequentibus formae 

 Anglice: Jonathan
 Batavice: Jonathan
 Bohemice: Jonatán
 Graece: Ιωναθαν (Ionathan)
 Hebraice: יוֹנָתָן (Yonatan), יְהוֹנָתָן (Yehonatan)
 Hispanice: Jonatán
 Italiane: Gionata
 Lusitanice: Jónatas
 Russice: Ионафан (Ionafan)
 Theodisce: Jonathan

Quidam homines 

 Ionathan, persona Biblica
 Ionathan Cruddas
 Ionathan Dayton
 Ionathan Demme
 Ionathan Franzen
 Ionathan Hunton
 Ionathan Hyde
 Ionathan Israel
 Ionathan Lester
 Ionathan Shaw
 Ionathan Swift
 Ionathan Zenneck

Notae 
Praenomina