WACM

WACM may refer to:


 * WACM (AM), a radio station (1270 AM) licensed to serve Springfield, Massachusetts
 * WACM-LP, a defunct low-power radio station (94.3 FM) formerly licensed to serve Auburn, Alabama
 * WSPR (AM), a radio station (1490 AM) licensed to serve West Springfield, Massachusetts, which held the call sign WACM from 1983 to 2016
 * WILK-FM, a radio station (103.1 FM) licensed to Avoca, Pennsylvania, which held the call sign WACM-FM from 1976 to 1979
 * Weak axiom of cost minimization