To provide a new and useful desk calendar, in which a comparatively thin paper stock is employed, which can be folded flat during its circulation, can be easily assembled at use and properly demonstrate not only a function as the calendar but also a function as a pen stand and can arrange a parting strip for classifying pens easily usably without inconvenience.

The desk calendar P is composed by equipping with an outside member 1, which is composed by folding a paper stock and has the housing space 1A of a writing utensil W formed at some part, and a parting member 2, which is composed by folding the paper stock similarly and is housed inside the outside member 1 in order to partition the housing space 1A under the condition that a vertical piece 15 is provided on a bottom wall 12 forming the housing space 1A of the outside member 1 and, at the same time, a parting member 2 is arranged in a positioning state so as to engage with the vertical piece 15.