To provide a notebook cover with a pen holder with a structure that allows a writing utensil to be easily inserted into the pen holder, can hold the writing utensil without a clip, prevents the inserted writing utensil from falling from the pen holder, in which the pen holder does not interrupt the high-class feeling of the notebook cover.

A first gap part 6 that dwindles downwards, whose upper side opens when a cover body 2 is closed is formed at a rear surface part 2c of a cover body 2 and a spine part 5a side of a notebook body 5 as a pen holder. A second gap part 7 continued to the first gap part 6 is formed between a front surface part 2a of the cover body 2 and a front cover 5a side of the notebook body 5. A writing utensil 9 is inserted in the first gap part 6 while the cover body 2 is open. The writing utensil 9 is sandwiched and held inside the notebook cover 1 by closing the cover body 2 after a tip end 9a of the writing utensil 9 has been abutted with an inner surface of the notebook cover 2 to prevent the writing utensil from slipping off.