Aiud (; , , Hungarian pronunciation: ; ) is a city located in Alba county, Transylvania, Romania. The city has a population of 28,934 people. It has the status of municipality and is the second-largest city in the county, after county seat Alba Iulia. The city derives its name ultimately from St. Giles (Aegidius), to whom the first church in the settlement was dedicated when built.

Aiud (; , , Hungarian pronunciation: ; ) is a city located in Alba county, Transylvania, Romania. The city has a population of 28,934 people. It has the status of municipality and is the second-largest city in the county, after county seat Alba Iulia. The city derives its name ultimately from St. Giles (Aegidius), to whom the first church in the settlement was dedicated when built.