Alto Pass is a village in Union County, Illinois, United States.

Alto Pass lies roughly 5.1 miles to the northwest of downtown Cobden, Illinois.

Illinois Route 127 runs just west of the village's downtown area.

Alto Pass was originally called Quetil, and under the latter name was laid out in 1875 when the railroad was extended to that point.

[5] Bald Knob Cross is located approximately five miles southwest of the village.