The EEG electrode locator headgear allows the user to locate and apply disposable EEG electrodes accurately according to the International 10/20 System without technical assistance, to allow the acquisition of high quality EEG signals. The headgear includes a front forehead pad, a base strap assembly connected to the front forehead pad, a plurality of EEG electrode locators for receiving EEG electrodes, and a plurality of locator straps connected to the front pad of material, the base strap assembly, and to the plurality of EEG electrode locators for accurately positioning the plurality of EEG electrode locators positioned relative to the scalp of a user. A visor can be attached to the front pad of material, and the base strap assembly may include an occipital locator device. A plunger assembly with spreadable fingers for optionally parting the hair of the user's scalp is also provided that is inserted in the electrode locators to optionally prepare the user's scalp and to seat the electrodes. In one embodiment, a spreader portion of the plunger assembly is formed of electrically conductive material, such as electrically conductive silicone. An elastic, stretchable cap portion may also be connected to the EEG electrode locators, for biasing the plurality of electrode locators toward the user's scalp.