The Galiuro Mountains are a large sky island mountain range of southeast Arizona, United States. It is a northerly mountain range in the Madrean Sky Islands region of southeast Arizona, northern Sonora in northwestern Mexico, and the extreme southwest (the "bootheel") of New Mexico.

The range is noted for its height and ruggedness. The Aravaipa Canyon Wilderness encompasses the north perimeter of the range, and the large Galiuro Wilderness covers the central-south. To the south, the Galiuro Wilderness borders the Redfield Canyon Wilderness. A river valley borders the range to the southwest, and Aravaipa Creek and Valley border its northeast.

The Galiuro Mountains are a northwest–southeast trending range. The moderately wide San Pedro Valley and River border its southwest, abutting the northeast of the large sky island Santa Catalina Mountains range. The more narrow canyon northeast is the Aravaipa Valley with Aravaipa Creek.

Mammoth, Arizona, northeast of Tucson and San Manuel, are the closest communities to the range on its northwest.

The highest peak of the range is Bassett Peak (Western Apache: Dził Nazaayú´- "Mountain That Sits Here and There") at 7,663 feet (2,336 m). Other peaks from north-to-south: Black Butte at 4,573 feet (1,394 m), Sixtysix Peak, Mescal Peak, Horse Mountain at 6,225 feet (1,897 m), Maverick Mountain at 7,003 feet (2,135 m), China Peak, Topout Peak, Kennedy Peak at 7,549 feet (2,301 m), Sunset Peak, Bassett Peak at 7,663 feet (2,336 m), and Saddle Mountain at 6,167 feet (1,880 m).

• List of mountain ranges of Arizona

• Arizona Mountain Ranges Highpoints
• Galiuro Mountains at mountainzone: Coordinates, Trails, (only accurate info)
• Visual Overview via Saguaro Juniper Corporation
• Bassett Peak, Arizona Peaks, 'Climber.Org'
• Media related to Galiuro Mountains at Wikimedia Commons