Kanbun is a Unicode block containing annotation characters used in Japanese copies of classical Chinese texts, to indicate reading order.

Kanbun or kambun (漢文, «Chinese writing») is a method of annotating Classical Chinese so that it can be read in Japanese that was used from the Heian period to the mid-20th century. Much Japanese literature was written in this style, and it was the general writing style for official and intellectual works throughout the period. As a result, Sino-Japanese vocabulary makes up a large portion of the lexicon of Japanese, and much classical Chinese literature is accessible to Japanese readers in some semblance of the original. The corresponding system in Korean is gugyeol.