The Type 4 Ke-Nu (四式軽戦車 ケヌ, Yon-shiki keisensha Kenu) was a light tank of the Imperial Japanese Army in World War II.

Operational experience against the Soviet Red Army at Nomonhan during the Soviet–Japanese border conflicts in 1939 revealed that this gun was inadequate against opposing armor, and a new higher velocity 47 mm tank gun was developed.

[5] According to one estimate, approximately 100 tanks were converted late in World War II.

The conversion coming in 1944 was too late to make any impact on Japanese combat operations, and most of the Type 4 Ke-Nu tanks were retained in the Japanese home islands in anticipation of the projected American invasion.

[1] Surviving Type 4 Ke-Nu tanks are on display at the Museum of the Great Patriotic War, Moscow and the Kubinka Tank Museum, which is part of the Patriot military theme park in Kubinka, Russia.