The Type 98 20 mm AA half-track vehicle was an experimental Japanese self-propelled anti-aircraft gun.

It had a single 20 mm Type 98 AA machine cannon mounted on the back section of a Type 98 Ko-Hi half-tracked prime mover.

[1] The Type 98 half-tracks were considered "high speed" prime movers, capable of 48 km/h (30 mph) when loaded.

[1] The rear-mounted Type 98 20 mm AA autocannon was the most common light anti-aircraft gun of the Imperial Japanese Army.

[3] The Type 98 20 mm AA half-track vehicle was not mass produced.