There is disclosed a hydrocarbon aromatization process in which hydrocarbons are aromatized in an aromatization zone of an aromatization system, and an effluent comprising aromatic hydrocarbons is recovered. The hydrocarbons are contacted in the aromatization zone with an aromatization catalyst which comprises a non-acidic zeolite support, a Group VIII metal and one or more halides. A nitrogenate, and optionally also an oxygenate, is introduced into the aromatization system whereby ammonia is caused to be present in the aromatization zone during the aromatization process.
