An adjustable steering apparatus (S) includes: a movable bracket (3) to which a steering jacket (1) having a steering wheel (2) is fixed and to which a movable telescopic member (9) having a tooth portion (9a) is fixedly mounted; a stationary bracket (4) which is disposed externally of the movable bracket (3) and fixed to a vehicle body, and to which a stationary tilt member (10) having a tooth portion (10a) is fixedly mounted; a movable tilt member (12) having a tooth portion (12a) meshingly engageable with the tooth portion (10a) of the stationary tilt member (10); and a stationary telescopic member (11) having a tooth portion (11a) meshingly engageable with the tooth portion (9a) of the movable telescopic member (9). Both the movable tilt member (12) and the stationary tilt member (10) have openings (10b,12b). The tooth portion (11a) of the stationary telescopic member (11) is designed to be meshed with the tooth portion (9a) of the movable telescopic member (9) as penetrating through the movable tilt member (12) and stationary tilt member (10).