Cadia may refer to: CADIA, the Center for Analysis and Design of Intelligent Agents. A research centre at Reykjavík University. Cadia, New South Wales, a locality and former private township in Australia; the surrounding area is known as the Cadia Valley. Cadia (plant), a genus of legumes Cadia (band), Christian girl band Cadia (Warhammer 40,000), a fictional planet in the Warhammer 40,000 universe See also:
Cadia-Ridgeway Mine, gold/copper mine in Australia Cadia Engine House, a heritage listed engine house at Cadia, New South Wales Cadia Mine railway line, a now dismantled railway line that once ran to Cadia, New South Wales.