Abstract: A mouth shield (1) for a microphone headset (4) having a rigid arcuate frame which is attachable to the mouth piece holder (3) of a microphone headset (4) by clasping means (13, 15) so it may be removably attached as desired. The shield (1) has at least one air vent aperture (2) for ease of breathing and proximal audibility. An optional removable foam insert (14) may be adhesively attached to an inner side of the shield (4) to catch saliva while speaking. The shield (1) precludes external visibility of lips while speaking and interference with audibility caused by wind and other adverse weather conditions.