WNAC may refer to:
- WNAC-TV, a television station (channel 12 digital) licensed to Providence, Rhode Island, United States
- WHDH-TV, a television station (channel 7 analog/42 digital) licensed to Boston, Massachusetts, United States, which used the call sign WNAC-TV from August 1948 to May 1982
- WRKO, a radio station (680 AM) licensed to Boston, Massachusetts, United States, which formerly used the call sign WNAC
- WBMX-FM, a radio station (98.5 FM) licensed to Boston, Massachusetts, United States, which formerly used the call sign WNAC-FM