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The U. S. state of Arizona's State Routes are usually abbreviated as SR.

The Arizona State Highway system was introduced on September 9, 1927, by the State Highway Commission (formed on August 11 of the same year). It incorporated the new federal aid system and also the U. S. Highway system. The 1927 plan included 27 state routes, most of which were simply dirt roads. Until 1942, the state route marker signs contained a Native American swastika that were used by Navajos, but were removed after the U. S.'s entry into World War II against Nazi Germany which had a reversed swastika as its emblem and became strongly negatively associated with the Nazis. The modern system was introduced and adopted in the 1950s.

The Arizona Department of Transportation (ADOT) internally recognizes Interstate Highways, U. S. Highways and Arizona Highways as all being separate types of highway designations. State highways within Arizona are referred to as Arizona State Routes or State Routes, with the prefix "SR" being used for abbreviations. ADOT also recognizes seven different types of suffixed routes for the U. S. Highways and State Routes. The recognized suffixes consist of the following with "(Number)" filling in for a numeric designation:
Alternate (A) – Referred to as "State Route (Number)A" and abbreviated as "SR (Number)A". Business Route (B) – Referred to as "State Business Route (Number)" and abbreviated as "SR (Number)B" or "SR (Number) Bus.". Loop Route (L) – Referred to as "State Loop Route (Number)" and abbreviated as "SR (Number)L". Despite often having "Loop" within their titles, SR 101, SR 202 and SR 303 are not considered "Loop Routes" by ADOT, nor are Interstate Business Loops. Spur (S) – Referred to as "State Route (Number) Spur" and abbreviated as "SR (Number)S" or "SR (Number) Spur". Truck (T) Referred to as "State Route (Number) Truck" and abbreviated as "SR (Number) Truck". Temporary (X) Publicly referred to as "State Route (Number) Temporary" or "State Route (Number)T" and abbreviated "SR (Number)T". Internally referred to as "State Route (Number)X" and abbreviated "SR (Number)X". Suffixed routes for Interstates are a different story. Although the suffixed routes are signed with Interstate green Business shields, they are recognized by ADOT as suffixed State Routes. In the field, Interstate 10 business routes are signed as Interstate 10 Business Loop or Interstate 10 Business Spur, while they are referred to by ADOT as "State Business Route 10" (SR 10B) and "State Route 10 Spur" (SR 10 Spur). The same principle applies with business routes for all other Interstates in Arizona.

Copper Corridor Scenic Road SR 177 Section: From US 60 in Superior to SR 177 in Kearny. SR 77 Section: From SR 77 inside Tonto National Forest to SR 77 south of Dudleyville. Coronado Trail Scenic Road From US 191 near Springerville to US 191 near Morenci. Desert Tall Pines Scenic Road Entire length of SR 288. Diné Tah Among The People Scenic Road From N 64 in Chinle to N 12 at I 40 near Lupton. (In two discontinuous sections, connected by N 12 through New Mexico)
Fredonia Vermilion Cliffs Scenic Road From US 89A in Colorado City to US 89 in Bitter Springs. Gila Pinal Scenic Road From US 60 in Florence to US 60 at the Tonto National Forest boundary near Miami. Joshua Forest Scenic Road From US 93 in Wikieup to US 93 in Wickenburg. Kayenta Monument Valley Scenic Road From US 160 in Kayenta to US 163 in Utah. Mingus Mountain Scenic Road From SR 89A in Jerome to SR 89A at the Coconino National Forest boundary. Naat'tsis'aan Navajo Mountain Scenic Road From SR 98 in Lechee to US 160. Patagonia Sonoita Scenic Road From SR 83 at I 10 in Vail to SR 82 near Nogales. Red Rock All American Road From SR 179 in Sedona to SR 179 near I 17. San Francisco Peaks Scenic Road From US 180 in Flagstaff to US 180 near Valle. Sedona Oak Creek Canyon Scenic Road From SR 89A in Sedona to SR 89A milepost 390 inside Coconino National Forest. Tse'nikani Flat Mesa Rock Scenic Road From US 160 near Mexican Water to US 191 near Many Farms. White Mountain Scenic Road From SR 260 in McNary to the SR 260 junction with SR 261, full length of SR 273 and Full length of SR 261. White River Scenic Road From SR 260 near McNary to SR 73 in White River.