Koshirō Oikawa

Senior Third Rank
Koshirō Oikawa
Senior Third Rank Koshirō Oikawa
及川古志郎
	Japanese Admiral Koshirō Oikawa
Chief of the Imperial Japanese Navy General Staff
	In office; 2 August 1944 – 29 May 1945
Prime Minister	Kuniaki Koiso; Kantarō Suzuki;
Preceded by	Shimada Shigetarō
Succeeded by	Soemu Toyoda
Minister of the Navy
	In office; 5 September 1940 – 18 October 1941
Prime Minister	Fumimaro Konoe
Preceded by	Yoshida Zengo
Succeeded by	Shimada Shigetarō
Member of the Supreme War Council
	In office; 18 October 1941 – 15 November 1943
Monarch	Hirohito
Personal details
Born	16 February 1883; Koshi, Niigata, Japan
Died	9 May 1958 (aged 75); Musashino, Tokyo, Japan
Military service
Allegiance	Empire of Japan
Branch/service	Imperial Japanese Navy
Years of service	1903–1945
Rank	Admiral
Commands	Asashio, Yūgiri, Kinu, Tama, Naval Operations Bureau, 1st Carrier Division, Naval Academy, 3rd Fleet, Naval Aviation Bureau, China Area Fleet, Yokosuka Naval District, Naval War College, Maritime Escort Fleet;
Battles/wars	Russo-Japanese War Battle of Tsushima; ; World War II Pacific War; ;

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Koshirō Oikawa (及川古志郎, Oikawa Koshirō; 16 February 1883 – 9 May 1958) was an admiral in the Imperial Japanese Navy and Naval Minister during World War II.