KBIU (103.3 FM, "Hot 103.3") is an American radio station broadcasting a top 40 (CHR) format, licensed to Lake Charles, Louisiana.

Its studios are located on Broad Street in downtown Lake Charles and its transmitter is in Sulphur, Louisiana.

The format featured everything from AC/DC to Frank Zappa and included progressive country such as Jerry Jeff Walker and Rusty Wier.

The station was also community oriented putting on several concerts over the course of its history to raise money for worthwhile causes including the "Save The Arcade" campaign.

Then in 1981 the station switched to a Top 40/CHR format and its call sign to KBIU, under their new moniker as "All Hit Bayou 104".