Nakajima Hiroyuki (中嶋宏行, born February 17, 1956) is a contemporary Japanese artist and calligrapher from Chiba, Japan. He is best known for his modern interpretation of Japanese calligraphy (shodo) which he calls Sho art, a technique which combines the traditional elements of Japanese calligraphy (shodo) with the movements of Tai Chi and inspired by the symbols of zen and nature.

He began his training in shodo at the age of 6 and would continue his studies through his post-graduate years at Chiba University where he received a degree in Architectonics (Industrial Engineering). A practitioner of Tai Chi since his twenties, Nakajima developed his own style of contemporary Japanese calligraphy, blending shodo with Tai Chi movements.

By introducing the movements of Tai Chi into his art, Nakajima intended to demonstrate the process of creating the art by means of a performance. Most of his performances begin with Nakajima standing in a meditative state over a blank canvas, and then when inspired uses one sharp stroke of the brush to create the abstract form of nature: moon, soil or a mountain. Nakajima has explained that the one stroke of a brush is carried out with a single, condensed thought to bring about the forms and lines of a moment in time.

Nakajima has said, "Every work of "Sho" is created in one continuous motion, and therefore cannot be repeated or re-written. The power of "Sho" lies in this feature of non-recurrence. Even if you draw the same letter ten times, ten different forms will arise spontaneously.

Nakajima has held exhibitions and live performances throughout Europe, Japan and the United States. In 2006 he was invited to participate in the 60th Festival d'Avignon in France, and in the 2006 Art Basel Miami, where he debuted in the United States. Nakajima currently has studios in Chiba, Japan and in Milan, Italy.