LTHS or Lths may refer to:
Lepanthes, a genus of orchids abbreviated by horticulturists as "Lths"
High Schools Lacey Township High School, Lacey Township, New Jersey, USA Lackawanna Trail High School, Factoryville, Pennsylvania, USA Lake Travis High School, unincorporated Travis County, Texas, USA Lockport Township High School, Lockport, Illinois, USA Lyons Township High School, La Grange, Illinois, USA Lebanon Trail High School, Frisco, Texas USA