KFSP (1230 AM) is a radio station licensed to Mankato, Minnesota and serving the greater Mankato area and the Minnesota River Valley with a sports format.

Founded in 1938 as KYSM, KFSP is the oldest radio station in Mankato.

It was formerly owned by Clear Channel Communications, which sold its Mankato stations — KYSM, KYSM-FM, and KXLP — to Three Eagles Communications following Clear Channel's 2006 privatization.

In September 2007, Three Eagles agreed to sell KYSM and KXLP to Linder Radio Group, a.k.a.

Minnesota Valley Broadcasting Co.[2] Linder currently owns KDOG, KTOE, KXAC, KATO-FM and KXLP in the Mankato market.