A card edge connector includes a harness-side connector (H) in which a plurality of terminal fittings (50) are arranged side by side in a harness-side housing (10) and a board-side connector (P) in which a connecting edge portion (63) of a circuit board (62) projects from a front surface (60F) of a board-side housing (60). The harness-side housing (10) includes a terminal accommodating portion (39) configured to accommodate the plurality of terminal fittings (50), and a housing accommodating portion (48) arranged to face a front surface (39F) of the terminal accommodating portion (39) and configured to accommodate the board-side housing (60) connected to the harness-side housing (10). A resilient member (49) configured to bias the terminal accommodating portion (39) and the board-side housing (60) in a direction toward or away from each other in parallel to a connecting direction is provided in the housing accommodating portion (48).