List of ancient place names and geographical names / Io

Latin name	Greek name	description	today	Sources and References	location
Iobacchi				Smith ;
Iol				Smith ;
Iolai				Smith ;
Iolcus				Smith ;
Iomnium		City in Mauretania Caesariensis	Tigzirt in Algeria	Smith ;
ion	Ἴων  (Iōn)	River in Thessaly, tributary of the Peneios		Smith ;
Ion Mons				Smith ;
Iones				Smith ;
Ionia	Ἰωνία  (Iōnia)	Ionia on the coast of Asia Minor		Smith ;
Ionium Mare				Smith ;
Ionopolis		see Abonuteichos
Ios	Ἴος  (Ios)	Island in the Aegean Sea		Smith ;