A steering column comprising: a front side column and a rear side column; the steering column constructed by fitting together a rear section of the front side column, which is a tip end section thereof, and a front section of the rear side column, which is a tip end section thereof, so that relative displacement in an axial direction thereof is possible; characterized in that a long engaging hole (26, 26a) is provided in the tip end section of the one of the front side column and the rear side column so as to extend in the axial direction; an engaging piece (28, 28a) is integrally provided in the tip end section of the other of the front side column and the rear side column; the engaging piece (28, 28a) comprises a protruding section (33, 33a) that protrudes in a radial direction from a circumferential surface on a side of the one of the front side column and the rear side column of the tip end section of the other of the front side column and the rear side column; the engaging piece (28, 28a) can elastically deform, the tip end section of the one of the front side column and the rear side column being able to pass the outer diameter side or inner diameter side of the protruding section (33, 33a) due to the elastic deformation of the engaging piece (28, 28a); the protruding section (33, 33a) moves into the long engaging hole (26, 26a) in the state in which the engaging piece (28, 28a) is elastically restored, so as to be able to displace along the long engaging hole (26, 26a) within a specified range; the protruding section (33, 33a) does not stick out from the inside of the long engaging hole (26, 26a) toward the outer diameter side or inner diameter side of the one of the front side column and the rear side column in the state in which the engaging piece (28, 28a) is elastically restored; the protruding section (33, 33a) is able to engage with an end edge on the tip end side of the long engaging hole (26, 26a); with the steering column assembled in a vehicle body, a range in which the front side column and the rear side column can displace relative to each other in the axial direction, being regulated to a specified range; and in a state before the steering column is assembled in the vehicle body, or in a state after a secondary collision, excessive relative displacement in the axial direction between the front side column and the rear side column being prevented by the end edge on the tip end side of the long engaging hole with the engaging piece. a front side column and a rear side column; the steering column constructed by fitting together a rear section of the front side column, which is a tip end section thereof, and a front section of the rear side column, which is a tip end section thereof, so that relative displacement in an axial direction thereof is possible; characterized in that a long engaging hole (26, 26a) is provided in the tip end section of the one of the front side column and the rear side column so as to extend in the axial direction; an engaging piece (28, 28a) is integrally provided in the tip end section of the other of the front side column and the rear side column; the engaging piece (28, 28a) comprises a protruding section (33, 33a) that protrudes in a radial direction from a circumferential surface on a side of the one of the front side column and the rear side column of the tip end section of the other of the front side column and the rear side column; the engaging piece (28, 28a) can elastically deform, the tip end section of the one of the front side column and the rear side column being able to pass the outer diameter side or inner diameter side of the protruding section (33, 33a) due to the elastic deformation of the engaging piece (28, 28a); the protruding section (33, 33a) moves into the long engaging hole (26, 26a) in the state in which the engaging piece (28, 28a) is elastically restored, so as to be able to displace along the long engaging hole (26, 26a) within a specified range; the protruding section (33, 33a) does not stick out from the inside of the long engaging hole (26, 26a) toward the outer diameter side or inner diameter side of the one of the front side column and the rear side column in the state in which the engaging piece (28, 28a) is elastically restored; the protruding section (33, 33a) is able to engage with an end edge on the tip end side of the long engaging hole (26, 26a); with the steering column assembled in a vehicle body, a range in which the front side column and the rear side column can displace relative to each other in the axial direction, being regulated to a specified range; and in a state before the steering column is assembled in the vehicle body, or in a state after a secondary collision, excessive relative displacement in the axial direction between the front side column and the rear side column being prevented by the end edge on the tip end side of the long engaging hole with the engaging piece.