IHH may refer to:
IHH Healthcare IHH (protein), a protein which in humans is encoded by the IHH gene IHH (Turkish NGO), an Islamic Turkish NGO active in more than 100 countries I Heart Huckabees, a 2004 philosophical comedy film Internationale Humanitäre Hilfsorganisation e.V., an international aid association based in Frankfurt Isolated hypogonadotropic hypogonadism