Kenichi Sawai (1903–1988) was a Japanese martial artist and a colonel in the Japanese army. He was an associate of Mas Oyama.
Having achieved a fourth-dan grade in judo under Sanpo Toku and a fifth-dan in kendo, Kenichi visited Beijing in 1939 to challenge Wang Xiangzhai, the founder of yiquan. He made several attempts to defeat Wang, including one where he fought with a shinai whilst Wang used only a stick. However, Kenich was soundly defeated each time. Kenichi subsequently applied to study under Wang, and was accepted. However, virtually all of his training was provided by Wang’s student, Yao Zongxun.
Kenichi subsequently returned to Japan, where he introduced a slightly modified version of yiquan which he called Taikiken.
泽井健一（曾被译作健一泽井）是日本的武术家，也是一名军队中的上校。1939年他来到北京挑战王芗斋，多次均以失败告终，其中他的竹刀也败于王芗斋的木棍，最后他决定向王芗斋学习。此后，他接受的训练基本都来自于姚宗勋。后来他回到日本，推广他自称为“太气拳”的拳术。
