List of suffixed Arkansas state highways

Highway markers for AR 7T, AR 14A, and AR 304N
A map of highways in the state of Arkansas
System information
Formed:	1926
Highway names
State:	Arkansas nnA, Highway nnA (AR nnA, Hwy. nnA)
System links
Arkansas Highway System Interstate US State Business Spurs Suffixed Scenic Heritage

This is a list of suffixed state highways in the U.S. state of Arkansas. The spurs are named after their parent highways, which leads to multiple designations of the same name in some cases. All highways are maintained by the Arkansas State Highway and Transportation Department (AHTD).

Arkansas state highway suffixed routes are signed using standard state highway shield backgrounds. The number remains the same size and a letter is added in an almost-exponential format. Shield sizes remain, one-digit routes keep the 24-by-24-inch (61 cm × 61 cm) shields, while two-digit routes become 24-by-36-inch (61 cm × 91 cm). Three-digit routes are the same as the parent route with the letter placed in the available corner space. Banners such as "alternate" are usually not used by the AHTD, which instead prefers to use only a direction banner.