Three auxiliary routes of Arkansas Highway 25 currently exist. Two are spur routes, with one serving as a business route.
Arkansas Highway 25 Business is a business route in Heber Springs. The route is in length.
The route passes through downtown Heber Springs, specifically passing the T.E. Olmstead & Son Funeral Home, Hugh L. King House, the Cleburne County Courthouse, and properties within the Heber Springs Commercial Historic District, each listed on the National Register of Historic Places.
Arkansas Highway 25 Spur is a spur route in Tumbling Shoals. It is a former alignment of Highway 25 that leads to Greers Ferry Lake and Old Highway 25 Park.
Arkansas Highway 25 Spur is a spur route in Charlotte. The route is in length and runs south, where it continues as Weaver Lane.
Arkansas Highway 25 Spur was a spur route in Heber Springs.