The name Ig was first attested in 1249 as Yge (and as Ighe, Iglem, and Iglom in 1261, Yg in 1262, and Hyco and Hyc in 1299). During the Middle Ages, Ig was a regional name, and the settlement now known as Ig was called Studenec until the beginning of the 19th century. The etymology of the name Ig is unclear. It may be connected with the Slovene common noun igo 'yoke' (in reference to the course of the Iška River), or to the Slovene common noun iva 'goat willow' (through borrowing into and then from German), or it may derive from a pre-Slavic substratum.[3]
History
After the Second World War, a Yugoslav labor camp for political prisoners operated in Ig.[4]