A board connector (20) has a connector housing (21) including a terminal holding portion (22) to be fixed to an upper surface (10S) of a circuit board (10) and a receptacle (23) extending forward only from an upper part (22U) and both left and right side parts (22S) of an outer periphery of the terminal holding portion (22). Male terminal fittings (30) are held through the terminal holding portion (22). Each male terminal fitting includes a board connecting portion (33) to be connected to the circuit board (10) behind the terminal holding portion (22) and a tab-like connecting portion (31) accommodated in the receptacle (23). The receptacle (23) does not include a lower wall to be overlapped on the upper surface (10S) of the circuit board (10). Thus, a height of the board connector can be reduced by a thickness of the lower wall.