KXRB (1140 kHz) is an AM radio station in Sioux Falls, South Dakota, airing a classic country format.

The programming on what was then KSOO was previously a mix of local talk shows, including "Viewpoint University", "McDaniel's Mess", and "The Mainstreet Cafe", which focused on the current events of the Sioux Falls area and South Dakota.

KSOO also featured a variety of nationally syndicated shows, such as Glenn Beck, Mike Huckabee, The Dave Ramsey Show and Lars Larson.

[2] Notable station alumni include Myron Floren, an American musician best known as the accordionist on The Lawrence Welk Show.

On August 7, 2017, KSOO and its news/talk format moved to 1000 AM, swapping frequencies with classic country-formatted KXRB.