A pen holder includes an upper housing for receiving and holding an upper end of a writing implement and a lower housing adapted to receive the writing end of the writing implement. The lower housing has a hole at its lower end that is sized to allow the writing tip of the writing implement to pass through, and the lower housing being removably coupled to the upper housing to form a chamber that at least partially encloses the writing implement. The length of the chamber, or the longitudinal position of the writing implement within the chamber, is variable to accommodate writing implements of different lengths.