Derivations from Kyokushin Kaikan

KYOKUSHIN BUDOKAI


Jon Bluming,
left the IKO in 1967

TSUYOI-RYU



Gerry Bryan,
left the IKO in 1975

MUSHIN
KARATE-DO


Mike Ganci
left the IKO in 1975

WORLD SEIDO KARATE ORGANIZATION

Todashi
Nakamura, left the IKO in 1976

KUROSAKI
DOJO


Kenji Kurosaki,
left the IKO    in 1976

WORLD KARATE ASSOCIATION SHIDOKAN

Yoshiji Soeno,
left the IKO in 1978

SEISHIN RYU KARATE


Lee E. Dawson, left the IKO in 197 ?

ASHIHARA KARATE INTERNATIONAL

Hoosain Narker, left the IKO in  1979

NEW INTERNATIONAL KARATE ORGANIZATION
Hideyuki Ashihara, left the IKO in 1980

SEIDO-KAIKAN



Kazuyoshi Ishii, left the IKO in 1980

WORLD OYAMA KARATE


Shigeru Oyama, left the IKO in 1981

ENSHIN
KARATE


Joko Ninomiya, left the IKO in ?

INTERNATIONAL FEDERATION
OF KARATE

Steve Arneil, 
left the IKO in  1991       

SEIWAKAI KARATE


Ademir Da Costa, left the IKO in 199?

THE AMERICAN KYOKUSHIN KARATE ORGANIZATION
Donald I. Buck, left the IKO in 1996?

KUROSAWA DOJO 


Hiroki Kurosawa, left the IKO in 1997?