A connector for a microphone includes a connecting member provided with a hook having a slot, a tubular member having an end formed with a plurality of hooks and fitted on the connecting member, an adjusting ring having a flange engaged with the hooks of the tubular member and an inner side formed with internal threads, and a fixing collar having an end formed with external threads engageable with the internal threads of the adjusting ring and a longitudinal notch engageable with the slot of the connecting member, whereby the microphone can be firmly and easily engaged with the connector.