To ensure mechanical strength when a couple acting in one axis direction is especially large, in a multiaxial force detector for simultaneously measuring forces in three directions and couples in three directions.

Strainable portions 15x and 15y formed by four quadrangular prisms are drawn outward along an x-axis and a y-axis from an elliptic load bearing part 12, and the strainable portions 15x and 15y are connected to a frame 11 via T-shaped flexures 16x and 16y. A distance between a center point of the load bearing part 12 and a middle portion of the flexures 16x is shorter than a distance between the center point of the load bearing part 12 and a middle portion of the flexures 16y.