WSLB (1400 AM) is a sports radio station, operating from Ogdensburg, New York, United States.

Prior to switching to a sports format, WSLB was an oldies radio station.

The station switched to NBC in the early 1990s when it entered into a three-way simulcast with sister stations WIGS (1230) and WGIX (95.3) in Gouverneur, New York with an oldies format as "FSR -- Full-Service Radio.

In 2006, the station picked up the ESPN Radio affiliation on weekends before going full-time beginning Saturday, December 1, 2007, dropping its talk format.

On December 3, 2007, WQTK began running a similar talk format to the one that had once aired on WSLB.