is a Japanese karateka of the Shotokan style.

In 2004, he won the Shoto World Cup for kata. He has reached the 8th dan in the Japan Karate Association (JKA) system.

As early as 2004, he was the general manager of the planning division at the JKA; in 2010, he instead became the general manager of the temporary personnel division. He remains an instructor with the JKA.

Biography Katsutoshi Shiina was born in Tokyo, Japan on 21 November 1961. He began practicing karate in his 5th year of elementary school, and later attended Takushoku University. His motto is "though my body seems not my soul is ready".

Competition Katsutoshi Shiina has had considerable success in karate competition.

Shoto World Cup (Funakoshi Gichin Cup) Kata Winner (1): 2004 (Tokyo) Third place (1): 2000 (Tokyo) Kumite Third place (1): 1994 (Philadelphia) JKA All Japan Karate Championship Kata Winner (2): 2001, 2004 Runner-up (1): 2002 Third place (1): 2000 Kumite Winner (3): 1991, 1993, 1994 Runner-up (2): 1987, 2000 Third place (4): 1990, 1995, 1996, 2002

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