A paper cup that contains a beverage and is held by a user with a hand, the paper cup includes: a cup main body formed as a cylinder with an open upper portion, and containing the beverage from the open upper portion; and a heat insulating material disposed on an outer wall of the cup main body so as to reduce a thermal conductivity between the beverage contained in the paper cup and the hand of the user holding the paper cup, and the heat insulating material is partially disposed on an outer wall of the cup main body along with a circumferential direction of the cup main body, and attached to the cup main body so as not to separate from the cup main body. Thus, since the heat insulating material is attached on the outer wall of the cup main body, the heat insulating material is not separable from the cup main body, and the user may conveniently hold the paper cup containing a hot or cold beverage.