A steering column support apparatus comprising: a bracket on the vehicle side that is fastened to the vehicle in at least two locations on both sides in the width direction, does not displace in the forward direction during a secondary collision and has a locking cutout section (28, 28a) that extends in the forward/backward direction formed in the portion between the two locations on both sides in the width direction; and a bracket on the column side that is located below the bracket on the vehicle side, supports the steering column, and comprises a top plate section on the top end section having a dimension in the width direction that is larger than the width dimension of the locking cutout section (28, 28a); characterized in that the steering column support apparatus further comprises a connecting bracket (30, 30a, 40, 41) that comprises an installation plate section (31, 42, 46) that connects and fastens to a portion of the top surface of the top plate section which is exposed on the inside of the locking cutout section (28, 28a), a raised section (32, 43, 47) that rises upward from the installation plate section (31, 42, 46), and a restraining plate section (33, 33a-c, 44, 48) that is bent and extends to the outside from the edge on the top end of the raised section (32, 43, 47), and with the installation plate section (31, 42, 46) connected and fastened to the top plate section, at least part of the restraining plate section (33, 33a-c, 44, 48) elastically coming in contact with the top surface of the bracket on the vehicle side, and by holding part of the bracket on the vehicle side between the restraining plate section (33, 33a-c, 44, 48) and the top plate section, the bracket on the column side being supported by the bracket on the vehicle side so as to be able to break away in the forward direction due to an impact load that is applied during a secondary collision. a bracket on the vehicle side that is fastened to the vehicle in at least two locations on both sides in the width direction, does not displace in the forward direction during a secondary collision and has a locking cutout section (28, 28a) that extends in the forward/backward direction formed in the portion between the two locations on both sides in the width direction; and a bracket on the column side that is located below the bracket on the vehicle side, supports the steering column, and comprises a top plate section on the top end section having a dimension in the width direction that is larger than the width dimension of the locking cutout section (28, 28a); characterized in that the steering column support apparatus further comprises a connecting bracket (30, 30a, 40, 41) that comprises an installation plate section (31, 42, 46) that connects and fastens to a portion of the top surface of the top plate section which is exposed on the inside of the locking cutout section (28, 28a), a raised section (32, 43, 47) that rises upward from the installation plate section (31, 42, 46), and a restraining plate section (33, 33a-c, 44, 48) that is bent and extends to the outside from the edge on the top end of the raised section (32, 43, 47), and with the installation plate section (31, 42, 46) connected and fastened to the top plate section, at least part of the restraining plate section (33, 33a-c, 44, 48) elastically coming in contact with the top surface of the bracket on the vehicle side, and by holding part of the bracket on the vehicle side between the restraining plate section (33, 33a-c, 44, 48) and the top plate section, the bracket on the column side being supported by the bracket on the vehicle side so as to be able to break away in the forward direction due to an impact load that is applied during a secondary collision.