Steven John Bellamy (born 12 June 1950, in Sheffield, England) is a British martial artist, author, and lecturer.

In the late sixties and seventies he won numerous national, European, and world titles in karate.

In addition to instructor ranks in karate, jūdō and aikidō, he holds advanced teaching licenses in several classical martial arts of Japan, notably Shindō Muso-ryū Jodō, Musō Shinden ryū Iaido, and Kasumi Shindō-ryū Kenjutsu He is a member of the Kansai Japanese language council (関西国語審議会) and has passed both the Japanese Language Proficiency Test (日本語能力試験) and the Japanese foreign service translators examination at level 1 (the highest).

In July 2009 he was appointed to the Nihon Jodo Association (日本杖道協会) Board of Directors.

In September 2010 he was appointed to the All Japan Iaido Federation (全日本居合道連盟) Board of Examiners.