An axle alignment system for a multi-axle trailer includes a mounting bracket, a mounting pin, at least one original equipment spacer, and at least one adjustable spacer. When the mounting bracket is utilized with the mounting pin and the original equipment spacer, the axle alignment system will only exclusively assume a nonadjustable, standard configuration. In contrast, when the mounting bracket is utilized with the mounting pin and the adjustable spacer, the axle alignment system will be activated and assume one of multiple possible adjusted configurations allowing one to align an axle of a multi-axle trailer.