WKKO (99.9 FM) is a commercial radio station in Toledo, Ohio with a country music format.

During the summer of 1981, WKLR ("Kooler Radio"), a longtime R&B/soul and later Disco music station, changed to its current country format known as K100.

Longtime morning duo Mitch and Mary Beth left WKKO for WRVF (101.5) in 2000 and were replaced by WKKO Program Director Gary Shores and Assistant Program Director Harvey J. Steele, together known as Shores & Steele.

The two had previously done afternoons for some six years, and were named Broadcast Personalities for medium markets by the Country Music Association.

As of 2021, the station’s lineup consists of the local Lyn & Cliff Morning Show, Toledo radio veteran Johny D on middays, and Mark “Mookie” Andrews on afternoon drive.