An earphone jack for tape recorders, into which an earphone plug is inserted, which comprises a housing having an earphone plug insertion hole, an earphone/speaker changeover switch having a fixed contact and a movable contact moved by the insertion of the earphone plug so that it is electrically separated away from the fixed contact to cause the earphone/speaker changeover switch to be turned OFF, and a muting switch disposed in said housing and operated by the operation of the earphone/speaker changeover switch.