A terminal module A includes a plurality of terminal fittings (30) each including a horizontal plate-like connecting portion (31) and a wire connecting portion (35) extending rearward from the plate-like connecting portion (31), a locking wall (38) rising from a front end edge of the plate-like connecting portion (31) and including a locking hole (42), and an insulating case (10) including accommodating portions (11) configured to individually accommodate the plurality of terminal fittings (30). Each accommodating portion (11) includes a receiving portion (23) configured such that a wire connecting portion (35) is to be placed thereon, a front panel (13) facing the locking wall (38), a locking projection (16) formed on the front panel (13) so that a locking hole (42) is to be locked thereto, and a support (22) facing the plate-like connecting portion (31) from behind.