Baron Ōkubo Haruno (大久保春野, 8 October 1846 – 26 January 1915) was a general in the early Imperial Japanese Army.

[1] After the Meiji Restoration, Ogawa attended a military boarding school in Osaka for the fledgling Imperial Japanese Army and was sent to France October 1870 for further training.

He was made a battalion commander of the IJA 14th Infantry Regiment under the Kumamoto Garrison in May 1880, returning to the Imperial Japanese Army General Staff in December 1882.

In 1894, Ōkubo was promoted to major general, and given command of the IJA 7th Infantry Brigade, which saw extensive combat during the First Sino-Japanese War, especially at Hiacheng and Fengcheng in Manchuria.

In July 1906, he was transferred to command the IJA 3rd Division and in September 1907 was elevated to the kazoku peerage with the title of danshaku (baron).