WRCA (1330 kHz) is a commercial AM radio station licensed to Watertown, Massachusetts, and serving the Greater Boston media market.

WCRB was originally a community radio station for Waltham, Massachusetts, before switching to a classical music format a few years later.

Sales of the station to various owners led to formats such as country music WDLW for most of the 1980s, and then "Showbiz Radio" WRCA (standing for "Radio, Comedy, and Arts") in 1990 before the station began leasing time to ethnic broadcasters in 1991 with the WRCA call sign retained.

In addition to ethnic programming, WRCA broadcast Northeastern Huskies men's ice hockey games.

Following Beasley's acquisition of Greater Media, WRCA went silent on November 15, 2016, as it moved to new studios; it returned in May 2017 with a simulcast of "Boston's Irish Channel", the HD2 channel of sister station WBQT, as it was believed that WRCA was in the process of signal testing.