NMHS may refer to:
Schools Norwood Morialta High School, former name of Norwood International High School, Adelaide, Australia Naples Middle/High School, Gricignano di Aversa, Italy North Medford High School, Oregon, United States North Mecklenburg High School, North Carolina, United States North Mesquite High School, Texas, United States Newark Memorial High School, California, United States New Milford High School (disambiguation), several schools in United States
Other uses National Maritime Historical Society, an American non-profit organization National meteorological and hydrological service