In a friction testing apparatus and method for accurately detecting a physical quantity relating to a friction such as a friction force or the like indicating a friction characteristic between objects to be measured in a dynamic states a first object (21) to be measured is mounted to a movable portion (10C) provided so as to be movable along a guide portion (10B), a second object (22) to be measured is pressed against the first object (21) to be measured mounted to the movable portion (10C), an object, in which the first object to be measured and the movable portion are integrated with each other, is moved in a state in which the second object to be measured is pressed against the first object to be measured, and an inertia force of the object at a time of moving the object is detected as a friction force acting between the first object to be measured and the second object to be measured.