The Kamiiida Line (上飯田線, Kamiiida-sen) is a subway line in Nagoya, Japan, part of the Nagoya Municipal Subway system.

It runs between Kamiiida and Heian-dōri, both in Kita Ward, Nagoya, and operates, with through service, as an extension to connect the Meitetsu Komaki Line to the City's Meijō Line.

The Kamiiida Line's color on maps is pink and stations are labeled with the prefix "K".

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.

[citation needed] All stations are in Nagoya, Aichi Prefecture.