Lieutenant General (ret.) Takeuchi Seiichi 武内誠一 (February 1958 - ) is a Japanese former Ground Self Defense officer.
- March 1980, Joined Japan Ground Self Defense Force.
- January 1999, Colonel.
- Commander, 25th Infantry Regiment.
- Chief, Training Section, Education Department, Ground Staff Office.
- July 2005, Major General. Vice Chief of Staff, North Eastern Army.
- 1 Apr 2007, Commander, 1st Combined Brigade.
- 21 Jul 2009, Deputy Director, National Institute for Defense Studies.
- 1 Dec 2010, Chief of Staff, North Eastern Army.
- 31 Jan 2012, Lieutenant General. Commander, 4th Division.
- 28 Mar 2013, Superintendent, JGSDF Fuji School.
- 4 Aug 2015, retired.