Lieutenant General (ret.) Isobe Koichi 磯部晃一 (January 1958 - ) is a Japanese former Ground Self Defense officer.
- March 1980, Joined Japan Ground Self Defense Force
- January 1999, Colonel.
- December 2003, Chief, Operation Section, Operation Department, Ground Staff Office.
- July 2005, Major General.
- 27 Mar 2006, Vice Chief of Staff, Eastern Army.
- 28 Mar 2007, Deputy Commander, Central Readiness Force.
- 21 Jul 2009, Director, Planning Department, Joint Staff Office.
- 5 Aug 2011, Lieutenant General. Commander, 7th Division.
- 26 Jul 2012, Vice Chief of Staff, Joint Staff.
- 22 Aug 2013, Commander, Eastern Army.
- 4 Aug 2015, retired.
|Vice Chief of Staff, Joint Staff
26 Jul 2012 - 22 Aug 2013
| Succeeded by|