WLAK may refer to:
- WLAK (AM), a radio station (1530 AM) licensed to serve New Holstein, Wisconsin, United States
- WHUN-FM, a radio station (103.5 FM) licensed to serve Huntingdon, Pennsylvania, United States, which held the call sign WLAK from 1989 to 2015
- W.L.A.K., American Christian music group
WLAK (1530 AM) is a daytime-only radio station licensed to the Calumet County community of New Holstein, Wisconsin, the station serves the Appleton-Oshkosh area, with a northwest of Chilton. The station is owned by Mark Heller through his operating company, Metro North Communications.
In October 2012, the then-WLWB was granted a U.S. Federal Communications Commission (FCC) construction permit to move to a new transmitter site and increase power to 350 watts daytime only. Construction was completed in late July 2013.