The Japan Ground Self-Defense Force (Japanese: 陸上自衛隊, romanized: Rikujō Jieitai), JGSDF (陸自, Rikuji), also referred to as the Japanese Army, is the land warfare branch of the Japan Self-Defense Forces. Created on July 1, 1954, it is the largest of the three service branches.

New military guidelines, announced in December 2010, direct the Japan Self-Defense Forces away from their Cold War focus on the Soviet Union to a new focus on China, especially in respect of the dispute over the Senkaku Islands.

The JGSDF operates under the command of the chief of the ground staff, based in the city of Ichigaya, Shinjuku, Tokyo. The present chief of staff is General Yoshihide Yoshida. The JGSDF numbered 150,700 soldiers in 2021.

Tanks : Type 10, Type 90, Type 74, Type 61 (retired)