To provide a solution to a problem of being very inconvenient that a conventional bookmark, having a fitting attachable on and detachable from a book and either a string or a chain of non-elastic material connecting to a bookmark body inserted between the half-read pages of a book, cannot be moved freely.

The bookmark of this invention includes a fitting 1 attachable on and detachable from a book, a bookmark body 2 to be inserted between the half-read pages of a book, and a connecting tool 3 that connects the fitting 1 and the bookmark body 2, which partially or wholly made of an elastic material.