PROBLEM TO BE SOLVED: To provide an interpupillary distance meter capable of being easily operated.SOLUTION: An interpupillary distance meter for measuring an interpupillary distance of a subject on the basis of positions of the subjects right and left eyes comprises: display means that is disposed in front of the subjects eyes and makes a measurement mark be displayed for the subjects right and left eyes through right and left inspection windows, respectively display control means for controlling display of the display means on the basis of an operation signal output from operation means according to operation of an examiner to execute first display control for making a display position of the measurement mark move, for the subjects eyes, in the right and left directions by a predetermined pitch in a measurement movement range determined from a preset measurement range and calculation means for calculating the interpupillary distance of the subject on the basis of the display position of the measurement mark. The display control means executes second display control differing from the first display control when the measurement mark has reached either of right and left limits of the measurement movement range.COPYRIGHT: (C)2016,JPO&INPIT