Provided is a seat configured so that the accuracy of detection of each sensor provided in the seat to detect the body potential of a seated occupant can be improved without worsening the sense of seating on the seat. A seat S of the present invention includes a trim cover 2 having a contact surface 2a for a seated occupant, and sensors 5 arranged opposite to the contact surface 2a and configured to detect the body potential of the seated occupant. Each sensor 5 is a capacitive coupling sensor configured to detect the body potential through the trim cover 2. Moreover, a portion of the seat S facing each sensor 5 includes a dielectric configured to increase the dielectric constant of such a portion.
