PLH

PLH may refer to:
 * Civil Aviation Authority (Hungary), Polgári Légiközlekedési Hatóság in Hungarian
 * Plymouth City Airport, IATA code
 * Liberal Party of Honduras, Partido Liberal de Honduras in Spanish
 * PLH Architects, a Danish architecture firm
 * Personal Licence Holder, a status in UK Licensing law
 * Polska Liga Hokejowa, top ice hockey league in Poland