This steering device includes suspension mechanisms (T1, T2) that suspend an upper jacket (16) via a movable bracket (24) by coupling a first plate (30) of a fixed bracket (23) and a second plate (32) of the movable bracket (24). A resin pin (61) of a coupling/separating mechanism (R1), which separates the second plate (32) from the predetermined position of the first plate (30) in the direction in which the column moves in the event of a secondary collision, is inserted into a first hole (66) of the first plate (30) and a second hole (67) of the second plate (32). The resin pin (61) has a margin of play with respect to at least one of the first hole (66) and the second hole (67) in relation to a direction orthogonal to said direction in which the column moves.
