The is a subway line in Nagoya, Japan, part of the Nagoya Municipal Subway system. It runs between Kamiiida and Heian-dà Âri, both in Kita Ward, Nagoya, and operates, with through service, as an extension to connect the Meitetsu Komaki Line to the City's Meijà  Line. The Kamiiida Line's color on maps is pink and stations are labeled with the prefix "K". Officially, the line is called the . All stations accept manaca, a rechargeable contactless smart card, and other major Japanese IC cards.
After the abolishment of Nagoya Municipal Tramway in the 1970s, Kamiiida Station, the terminus of Meitetsu's Komaki Line, lost its connection to Nagoya's other railway lines. The Kamiiida Line, serving as link with only two stops officially on the line, was opened in 2003.
All stations are in Nagoya, Aichi Prefecture.
The Kamiiida Line uses the following train types: