A wire position correcting device is used with a terminal mounting apparatus A for mounting a terminal fitting on a wire E fed between a crimper 32 and an anvil 20 from a side. A rotatable member 60 is provided which rotates as the crimper 32 moves upward and downward. The rotatable member 60 rotates when the wire E is fed and presses a specified position of the wire E to correct the position of the wire E so that the terminal fitting can be properly mounted at an end of the wire E. Accordingly, the end of the wire E can be accurately placed right on the fed terminal fitting during a terminal mounting operation. Even if the wire E is curved or deformed while being fed, the terminal mounting operation can be constantly properly performed. The mount position of a wire holding member 50 needs not be finely adjusted. <IMAGE>