<p>An object of the present invention is to realize the miniaturization of a terminal fitting while ensuring a deformation space for a resilient contact piece. A terminal fitting 10 is provided with a box-shaped main portion 11 capable of receiving a tab 61 of a mating terminal fitting 60 and a resiliently deformable resilient contact piece 12 arranged in the main portion 11 to be connected to the tab 61 inserted into the main portion 11. The resilient contact piece 12 includes a supporting portion 40 for resilient deformation in the main portion 11. The main portion 11 includes a base portion 18 facing the resilient contact piece 12 in a resilient deforming direction of the resilient contact piece 12. The base portion 18 includes a recess 46 formed within the thickness range thereof the base portion 18, and the supporting portion 40 is in contact with the bottom surface of the recess 46.</p>
