Irun (old
Basque for "fortified town"; ) is a town of the
Bidasoaldea region in the province of
Gipuzkoa in the
Basque Autonomous Community, Spain. Nowadays it is widely accepted by the historic researcher community that Irun is the ancient
Basque Roman town of
Oiasso on account of the vestiges (port, factory, etc.) disclosed lately in the historic nucleus of Irun, while the name itself may have applied to the whole surrounding area.