||January 20, 1930
||October 11, 2003
Sadateru Arikawa (有川定輝 Arikawa Sadateru) January 20, 1930 - October 11, 2003 was a Japanese aikido teacher and Aikikai Hombu Dojo shihan.
Born in Tokyo, Arikawa practiced karate as a youth. He began training in aikido at the Aikikai Hombu Dojo in 1948 and was promoted to 9th dan in 1994.
Arikawa was for many years the editor of the Aikikai's newspaper, and taught outside of Hombu at branch dojos including those of the Asahi Shimbun, Hosei University, and at several other universities.