The Municipality of Ig is a municipality in central Slovenia. Its seat is the settlement of Ig. It was formed in 1995 from parts of the Municipality of Vič–Rudnik, until then one of the five municipalities that formed the Civic Assembly of Municipalities of Ljubljana. It is part of the traditional region of Inner Carniola and is now included in the Central Slovenia Statistical Region. In the past the area was mostly marshland, but now Ig is a suburban and industrialized municipality. In 2002, it had 5,445 inhabitants.