A waterproof connector includes tabs (22) extending forward from terminal bodies (21) of male terminal fittings (20) with their centers higher than centers (21C) of the terminal bodies (21) in a height direction. A housing (10) has terminal accommodation chambers (12) for accommodating the terminal bodies (21) and connecting portions (23). A one-piece rubber plug (40) is in a rear part of the housing (10) and has seal holes (41). A rear holder (60) is behind the rubber plug (40) and has through holes (61) communicating with the seal holes (41). Inner peripheral lips (43F, 43R) on an inner periphery of each seal hole (41) closely contact an outer periphery of a wire (30) in a liquid-tight manner with the terminal body (21) and a front part (30F) of the wire (30) accommodated in the terminal accommodation chamber (12). The axes of through holes (61are lower than the axes of terminal accommodation chambers (12).