PROBLEM TO BE SOLVED: To provide an interdental cleaner permitting easy interdental cleaning for back teeth.SOLUTION: The interdental cleaner 1 includes a handle body 10 and a cleaning part 20 disposed at the distal end part of the handle body 10. The handle body 10 has a grip part 14 formed in such a shape that the center line is approximately straight. An angle &alpha between the center line of the grip part 14 and the tangent of the center line of the distal end part 12 is 120-145 degrees.SELECTED DRAWING: Figure 1