A press-in contact includes a connection portion to be connected to a circuit of a board or the like, a press-fitting portion to be fixed in a through-hole of a printed circuit board by press-fitting, and a contact portion contacting a contact of a mating connector. The press-fitting portion is formed to have a U-shaped groove in cross-section whose side walls has a thickness becoming thinner toward the open end of the U-shaped groove to make longer its outer peripheries contacting the through hole. A protrusion projecting from the center of the bottom of the U-shaped groove is provided along the full length of the U-shaped groove to an extent such that the protrusion does not adversely affect the flexibility of the ends of the walls of the U-shaped groove at its open end. With this construction, the ends of the walls forming the U-shaped groove are prevented from being deformed inwardly toward each other beyond the elastic limit, thereby maintaining the stable contact between the press-fitting portion of the press-in contact and the through-hole of the printed circuit board.