Colac can refer to: Colac, Victoria, a town in Australia City of Colac, a former local-government area in Victoria, Australia Shire of Colac, a former local-government area in Victoria, Australia Shire of Colac Otway, a current local-government area in Victoria, Australia Colac Botanic Gardens, in Colac, Australia Colac railway station, in Colac, Australia Lake Colac in Victoria, Australia Colac (mountain), in the Italian Dolomites Colac Bay, New Zealand , a ship of the Royal Australian Navy Kalach (food), spelled colac in Romania, traditional East Slavic bread, also common in Hungary, Romania, and Serbia