To provide a bookmark which indicates a text or a drawing or the like of a half-read book or magazine, and enables the continuation of the already read text or picture or the like to instantly be recognized when the continuation is read later, and also, which is hard to fall out when being fitted, is neatly housed in a book, and does not become an obstacle.

For this bookmark, an index for indicating the position of a specified line or character is installed on the end section of a circular sheet with flexibility of which the thickness is thin. Also, the thin and flexible circular sheet is transparent or translucent through which characters are seen.