A pull-in apparatus configured to pull in a unit (40; 19), which is drawable from an apparatus body of an image forming apparatus, toward a predetermined position in the apparatus body, the pull-in apparatus comprising: an arm member (92; 92L) that is provided in one of the apparatus body and the unit (40; 19) and is configured to move the unit (40; 19) toward the predetermined position by moving in a first direction; a restriction member (94; 94L; 94A) that is provided in the one of the apparatus body and the unit (40; 19) and is movable with respect to the arm member (92; 92L), in a state of being supported by the arm member (92; 92L), between a lock position at which the restriction member (94; 94L; 94A) restricts movement of the arm member (92; 92L) in the first direction and a lock-release position at which the restriction member (94; 94L; 94A) allows the movement of the arm member (92; 92L) in the first direction; a first action portion (46s1) that is provided in the other of the apparatus body and the unit (40; 19) and is configured to move the arm member (92; 92L) positioned at a stand-by position in a second direction opposite to the first direction in a course of inserting the unit (40; 19) in the apparatus body; and a second action portion (46s2) that is provided in the other of the apparatus body and the unit (40; 19) and is configured to move the restriction member (94; 94L; 94A) from the lock position to the lock-release position in the course of inserting the unit (40; 19) in the apparatus body, wherein movement of the restriction member (94; 94L; 94A) from the lock position toward the lock-release position is restricted in a state in which the arm member (92; 92L) is at the stand-by position, and the movement of the restriction member (94; 94L; 94A) from the lock position toward the lock-release position is allowed in a state in which the arm member (92; 92L) has been moved from the stand-by position in the second direction. an arm member (92; 92L) that is provided in one of the apparatus body and the unit (40; 19) and is configured to move the unit (40; 19) toward the predetermined position by moving in a first direction; a restriction member (94; 94L; 94A) that is provided in the one of the apparatus body and the unit (40; 19) and is movable with respect to the arm member (92; 92L), in a state of being supported by the arm member (92; 92L), between a lock position at which the restriction member (94; 94L; 94A) restricts movement of the arm member (92; 92L) in the first direction and a lock-release position at which the restriction member (94; 94L; 94A) allows the movement of the arm member (92; 92L) in the first direction; a first action portion (46s1) that is provided in the other of the apparatus body and the unit (40; 19) and is configured to move the arm member (92; 92L) positioned at a stand-by position in a second direction opposite to the first direction in a course of inserting the unit (40; 19) in the apparatus body; and a second action portion (46s2) that is provided in the other of the apparatus body and the unit (40; 19) and is configured to move the restriction member (94; 94L; 94A) from the lock position to the lock-release position in the course of inserting the unit (40; 19) in the apparatus body, wherein movement of the restriction member (94; 94L; 94A) from the lock position toward the lock-release position is restricted in a state in which the arm member (92; 92L) is at the stand-by position, and the movement of the restriction member (94; 94L; 94A) from the lock position toward the lock-release position is allowed in a state in which the arm member (92; 92L) has been moved from the stand-by position in the second direction.